fix(log): to allow printf and custom_print_cb to work at same time (#2837)

src/misc/lv_log.c

@@ -116,9 +116,8 @@ void lv_log(const char * buf)
 {
 #if LV_LOG_PRINTF
     puts(buf);
-#else
-    if(custom_print_cb) custom_print_cb(buf);
 #endif
+    if(custom_print_cb) custom_print_cb(buf);
 }
 
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