Fixed WIN32 crash when printing with the test/mandelbrot demo.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8273 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/fl_draw_image_win32.cxx

@@ -184,7 +184,7 @@ static void innards(const uchar *buf, int X, int Y, int W, int H,
   if (size > buffer_size) {
     delete[] buffer;
     buffer_size = size;
-    buffer = new U32[(size+3)/4];
+    buffer = new U32[(int)(1.02*   (size+3)/4)]; // some extra memory needed when printing
   }}
   bmi.bmiHeader.biHeight = blocking;
   static U32* line_buffer;