Cosmetics: prefer out/in over buf/src for the parameter names of

av_base64_encode(), for consistency/readability reasons.

Originally committed as revision 17069 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavutil/base64.h

@@ -34,6 +34,6 @@ int av_base64_decode(uint8_t * out, const char *in, int out_size);
  * @param src data, not a string
  * @param buf output string
  */
-char *av_base64_encode(char * buf, int buf_size, const uint8_t * src, int size);
+char *av_base64_encode(char *out, int out_size, const uint8_t *in, int size);
 
 #endif /* AVUTIL_BASE64_H */