small simplification

Originally committed as revision 10783 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/allcodecs.c

@@ -53,9 +53,9 @@
  */
 void avcodec_register_all(void)
 {
-    static int inited = 0;
+    static int inited;
 
-    if (inited != 0)
+    if (inited)
         return;
     inited = 1;
 

libavformat/allformats.c

@@ -43,9 +43,9 @@ void av_register_rtp_dynamic_payload_handlers(void);
  */
 void av_register_all(void)
 {
-    static int inited = 0;
+    static int inited;
 
-    if (inited != 0)
+    if (inited)
         return;
     inited = 1;