deps/media-playback: Remove unnecessary logging

Failure to decode is unfortunately quite common with certain file types,
and is most of the time safely recoverable.  There's no reason to
actually output a log message for this unless really needed.

deps/media-playback/media-playback/decode.c

@@ -256,8 +256,10 @@ bool mp_decode_next(struct mp_decode *d)
 			return true;
 		}
 		if (ret < 0) {
+#ifdef DETAILED_DEBUG_INFO
 			blog(LOG_DEBUG, "MP: decode failed: %s",
 					av_err2str(ret));
+#endif
 
 			if (d->packet_pending) {
 				av_packet_unref(&d->orig_pkt);

deps/media-playback/media-playback/media.h

@@ -104,6 +104,8 @@ extern void mp_media_free(mp_media_t *media);
 extern void mp_media_play(mp_media_t *media, bool loop);
 extern void mp_media_stop(mp_media_t *media);
 
+/* #define DETAILED_DEBUG_INFO */
+
 #ifdef __cplusplus
 }
 #endif