Fixed uninitialized variable warnings

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401813

src/stdlib/SDL_iconv.c

@@ -155,7 +155,7 @@ size_t SDL_iconv(SDL_iconv_t cd,
 	/* For simplicity, we'll convert everything to and from UCS-4 */
 	char *src, *dst;
 	size_t srclen, dstlen;
-	Uint32 ch;
+	Uint32 ch = 0;
 	size_t total;
 
 	if ( !inbuf || !*inbuf ) {

src/video/SDL_stretch.c

@@ -149,7 +149,7 @@ void copy_row3(Uint8 *src, int src_w, Uint8 *dst, int dst_w)
 {
 	int i;
 	int pos, inc;
-	Uint8 pixel[3];
+	Uint8 pixel[3] = { 0, 0, 0 };
 
 	pos = 0x10000;
 	inc = (src_w << 16) / dst_w;

src/video/x11/SDL_x11wm.c

@@ -246,8 +246,8 @@ void X11_SetCaptionNoLock(_THIS, const char *title, const char *icon)
 	Status status;
 
 #ifdef X_HAVE_UTF8_STRING
-	Atom _NET_WM_NAME;
-	Atom _NET_WM_ICON_NAME;
+	Atom _NET_WM_NAME = 0;
+	Atom _NET_WM_ICON_NAME = 0;
 
 	/* Look up some useful Atoms */
 	if (SDL_X11_HAVE_UTF8) {