lavfi: fix compilation with FF_API_OLD_FILTER_OPTS=0.

ffmpeg_filter.c

@@ -544,7 +544,7 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,
                    av_get_default_channel_layout(ost->audio_channels_mapped));
         for (i = 0; i < ost->audio_channels_mapped; i++)
             if (ost->audio_channels_map[i] != -1)
-                av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
+                av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
 
         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
         av_bprint_finalize(&pan_buf, NULL);

libavfilter/avfilter.c

@@ -976,8 +976,9 @@ int avfilter_init_str(AVFilterContext *filter, const char *args)
 
             if (ret < 0)
                 goto fail;
+        } else
 #endif
-        } else {
+        {
             ret = process_options(filter, &options, args);
             if (ret < 0)
                 goto fail;

libavfilter/vf_aspect.c

@@ -69,10 +69,10 @@ typedef struct AspectContext {
 
 static av_cold int init(AVFilterContext *ctx)
 {
+#if FF_API_OLD_FILTER_OPTS
     AspectContext *s = ctx->priv;
     int ret;
 
-#if FF_API_OLD_FILTER_OPTS
     if (s->ratio_expr && s->aspect_den > 0) {
         double num;
         av_log(ctx, AV_LOG_WARNING,