Fixing some minor lint, found by Pavel Shlyak using PVS studio

fluid/Fl_Group_Type.cxx

@@ -337,7 +337,6 @@ void Fl_Table_Type::move_child(Fl_Type* cc, Fl_Type* before) {
 Fl_Widget *Fl_Group_Type::enter_live_mode(int) {
   Fl_Group *grp = new Fl_Group(o->x(), o->y(), o->w(), o->h());
   live_widget = grp;
-  if (live_widget) {
   copy_properties();
   Fl_Type *n;
   for (n = next; n && n->level > level; n = n->next) {
@@ -345,14 +344,12 @@ Fl_Widget *Fl_Group_Type::enter_live_mode(int) {
       n->enter_live_mode();
   }
   grp->end();
-  }
   return live_widget;
 }
 
 Fl_Widget *Fl_Tabs_Type::enter_live_mode(int) {
   Fl_Tabs *grp = new Fl_Tabs(o->x(), o->y(), o->w(), o->h());
   live_widget = grp;
-  if (live_widget) {
   copy_properties();
   Fl_Type *n;
   for (n = next; n && n->level > level; n = n->next) {
@@ -360,7 +357,6 @@ Fl_Widget *Fl_Tabs_Type::enter_live_mode(int) {
       n->enter_live_mode();
   }
   grp->end();
-  }
   grp->value(((Fl_Tabs*)o)->value());
   return live_widget;
 }
@@ -368,10 +364,8 @@ Fl_Widget *Fl_Tabs_Type::enter_live_mode(int) {
 Fl_Widget *Fl_Table_Type::enter_live_mode(int) {
   Fl_Group *grp = new Fluid_Table(o->x(), o->y(), o->w(), o->h());
   live_widget = grp;
-  if (live_widget) {
   copy_properties();
   grp->end();
-  }
   return live_widget;
 }
 
@@ -396,7 +390,6 @@ Fl_Widget *Fl_Scroll_Type::enter_live_mode(int) {
   Fl_Group *grp = new Fl_Scroll(o->x(), o->y(), o->w(), o->h());
   grp->show();
   live_widget = grp;
-  if (live_widget) {
   copy_properties();
   Fl_Type *n;
   for (n = next; n && n->level > level; n = n->next) {
@@ -404,7 +397,6 @@ Fl_Widget *Fl_Scroll_Type::enter_live_mode(int) {
       n->enter_live_mode();
   }
   grp->end();
-  }
   return live_widget;
 }
 

fluid/Fl_Menu_Type.cxx

@@ -360,27 +360,27 @@ void Fl_Menu_Item_Type::write_code1() {
     }
   }
 
-  int init = 0;
+  int menuItemInitialized = 0;
   // if the name is an array variable, assign the value here
   if (name() && strchr(name(), '[')) {
     write_c("%s%s = &%s[%d];\n", indent(), name(), mname, i);
   }
   if (image) {
-    if (!init) {
+    menuItemInitialized = 1;
-      init = 1;
     write_c("%s{ Fl_Menu_Item* o = &%s[%d];\n", indent(), mname, i);
-    }
     image->write_code("o");
   }
-  for (int n=0; n < NUM_EXTRA_CODE; n++)
+  for (int n=0; n < NUM_EXTRA_CODE; n++) {
     if (extra_code(n) && !isdeclare(extra_code(n))) {
-      if (!init) {
+      if (!menuItemInitialized) {
-	init = 1;
+        menuItemInitialized = 1;
         write_c("%s{ Fl_Menu_Item* o = &%s[%d];\n", indent(), mname, i);
       }
       write_c("%s  %s\n", indent(), extra_code(n));
     }
-  if (init) write_c("%s}\n",indent());
+  }
+  if (menuItemInitialized)
+    write_c("%s}\n",indent());
 }
 
 void Fl_Menu_Item_Type::write_code2() {}

src/Fl.cxx

@@ -1306,6 +1306,7 @@ int Fl::handle_(int e, Fl_Window* window)
 
   case FL_UNFOCUS:
     window = 0;
+      // FALLTHROUGH
   case FL_FOCUS:
     fl_xfocus = window;
     fl_fix_focus();

src/Fl_Browser.cxx

@@ -511,7 +511,7 @@ void Fl_Browser::item_draw(void* item, int X, int Y, int W, int H) const {
   char* str = l->txt;
   const int* i = column_widths();
 
-  bool first = true;	// for icon
+  bool firstLoop = true;	// for icon
   while (W > 6) {	// do each tab-separated field
     int w1 = W;	// width for this field
     char* e = 0; // pointer to end of field or null if none
@@ -520,8 +520,8 @@ void Fl_Browser::item_draw(void* item, int X, int Y, int W, int H) const {
       if (e) {*e = 0; w1 = *i++;}
     }
     // Icon drawing code
-    if (first) {
+    if (firstLoop) {
-      first = false;
+      firstLoop = false;
       if (l->icon) {
 	l->icon->draw(X+2,Y+1);	// leave 2px left, 1px above
 	int iconw = l->icon->w()+2;

src/Fl_File_Chooser2.cxx

@@ -433,6 +433,7 @@ void
 Fl_File_Chooser::directory(const char *d)// I - Directory to change to
 {
   char	*dirptr;			    // Pointer into directory
+  char  fixpath[FL_PATH_MAX];   // Path with slashes converted
 
 
 //  printf("Fl_File_Chooser::directory(\"%s\")\n", d == NULL ? "(null)" : d);
@@ -444,7 +445,6 @@ Fl_File_Chooser::directory(const char *d)// I - Directory to change to
   if (Fl::system_driver()->backslash_as_slash()) {
     // See if the filename contains backslashes...
     char	*slash;				// Pointer to slashes
-    char	fixpath[FL_PATH_MAX];			// Path with slashes converted
     if (strchr(d, '\\')) {
       // Convert backslashes to slashes...
       strlcpy(fixpath, d, sizeof(fixpath));

src/Fl_Input_.cxx

@@ -1010,6 +1010,7 @@ int Fl_Input_::handletext(int event, int X, int Y, int W, int H) {
       if (!(damage()&FL_DAMAGE_EXPOSE)) {minimal_update(position_); erase_cursor_only = 1;}
     } else //if (Fl::selection_owner() != this)
       minimal_update(mark_, position_);
+      // FALLTHROUGH
   case FL_HIDE:
     fl_reset_spot();
     if (!readonly() && (when() & FL_WHEN_RELEASE))

src/Fl_Menu.cxx

@@ -533,7 +533,7 @@ int menuwindow::find_selected(int mx, int my) {
   if (my < 0 || my >= h()) return -1;
   if (!itemheight) { // menubar
     int xx = 3; int n = 0;
-    const Fl_Menu_Item* m = menu ? menu->first() : 0;
+    const Fl_Menu_Item* m = menu->first();
     for (; ; m = m->next(), n++) {
       if (!m->text) return -1;
       xx += m->measure(0, button) + 16;

src/Fl_Text_Buffer.cxx

@@ -1248,7 +1248,7 @@ void Fl_Text_Buffer::remove_(int start, int end)
   
   /* expand the gap to encompass the deleted characters */
   mGapEnd += end - mGapStart;
-  mGapStart -= mGapStart - start;
+  mGapStart = start;
   
   /* update the length */
   mLength -= end - start;