avcodec_find is in no header file, and appearently not used or very usefull so lets make it static ...

Originally committed as revision 3157 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/utils.c

@@ -574,7 +574,7 @@ AVCodec *avcodec_find_decoder_by_name(const char *name)
     return NULL;
 }
 
-AVCodec *avcodec_find(enum CodecID id)
+static AVCodec *avcodec_find(enum CodecID id)
 {
     AVCodec *p;
     p = first_avcodec;