Fix dangerous casts

On Windows 64-bit, the size of long is 32-bit, thus any pointer to long cast is
not valid. In any case, one should use intptr_t and ptrdiff_t when casting
to integers. This commit attempts to fix all instances reported by GCC.
When relevant, I replaced code by the macros PTR_ADD, ALIGN_UP from system.h

Change-Id: I2273b0e8465d3c4689824717ed5afa5ed238a2dc

1 files changed, 1 insertions, 1 deletions

diff --git a/apps/gui/skin_engine/skin_parser.c b/apps/gui/skin_engine/skin_parser.c
index 63f3f81140..5409861cc7 100644
--- a/apps/gui/skin_engine/skin_parser.c
+++ b/apps/gui/skin_engine/skin_parser.c
@@ -2493,7 +2493,7 @@ bool skin_data_load(enum screen_type screen, struct wps_data *wps_data,
         skin_buffer = wps_buffer;
         wps_buffer = (char*)buf;
     }
-    skin_buffer = (void *)(((unsigned long)skin_buffer + 3) & ~3);
+    skin_buffer = ALIGN_UP(skin_buffer, 4); /* align on 4-byte boundary */
     buffersize -= 3;
 #ifdef HAVE_BACKDROP_IMAGE
     backdrop_filename = "-";