Revert "avformat/format: temporarily use old next api"

This reverts commit 909e00ae.

There is no need to use the old API anymore as the new API now
behaves in the same way (treating devices as formats when loaded).
Signed-off-by: Josh de Kock <josh@itanimul.li>

libavformat/format.c

@@ -51,10 +51,9 @@ int av_match_ext(const char *filename, const char *extensions)
 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
                                 const char *mime_type)
 {
-    AVOutputFormat *fmt = NULL, *fmt_found;
-#if !FF_API_NEXT
+    const AVOutputFormat *fmt = NULL;
+    AVOutputFormat *fmt_found = NULL;
     void *i = 0;
-#endif
     int score_max, score;
 
     /* specific test for image sequences */
@@ -66,15 +65,8 @@ AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
     }
 #endif
     /* Find the proper file type. */
-    fmt_found = NULL;
     score_max = 0;
-#if FF_API_NEXT
-FF_DISABLE_DEPRECATION_WARNINGS
-    while ((fmt = av_oformat_next(fmt)))
-#else
-    while ((fmt = av_muxer_iterate(&i)))
-#endif
-     {
+    while ((fmt = av_muxer_iterate(&i))) {
         score = 0;
         if (fmt->name && short_name && av_match_name(short_name, fmt->name))
             score += 100;
@@ -86,12 +78,9 @@ FF_DISABLE_DEPRECATION_WARNINGS
         }
         if (score > score_max) {
             score_max = score;
-            fmt_found = fmt;
+            fmt_found = (AVOutputFormat*)fmt;
         }
     }
-#if FF_API_NEXT
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
     return fmt_found;
 }