Make register_avcodec() call avcodec_init().

This avoids the possibility to use a registered codec without first
initializing libavcodec, which resulted in unexpected behavior.

Originally committed as revision 16131 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -31,7 +31,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 52
 #define LIBAVCODEC_VERSION_MINOR  6
-#define LIBAVCODEC_VERSION_MICRO  1
+#define LIBAVCODEC_VERSION_MICRO  2
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \

libavcodec/utils.c

@@ -90,6 +90,7 @@ AVCodec *av_codec_next(AVCodec *c){
 void register_avcodec(AVCodec *codec)
 {
     AVCodec **p;
+    avcodec_init();
     p = &first_avcodec;
     while (*p != NULL) p = &(*p)->next;
     *p = codec;

libavformat/allformats.c

@@ -50,7 +50,6 @@ void av_register_all(void)
         return;
     initialized = 1;
 
-    avcodec_init();
     avcodec_register_all();
 
     /* (de)muxers */