avfilter/avf_aphasemeter: check return value of ff_insert_outpad()

libavfilter/avf_aphasemeter.c

@@ -233,6 +233,7 @@ static av_cold int init(AVFilterContext *ctx)
 {
     AudioPhaseMeterContext *s = ctx->priv;
     AVFilterPad pad;
+    int ret;
 
     pad = (AVFilterPad){
         .name         = av_strdup("out0"),
@@ -240,7 +241,11 @@ static av_cold int init(AVFilterContext *ctx)
     };
     if (!pad.name)
         return AVERROR(ENOMEM);
-    ff_insert_outpad(ctx, 0, &pad);
+    ret = ff_insert_outpad(ctx, 0, &pad);
+    if (ret < 0) {
+        av_freep(&pad.name);
+        return ret;
+    }
 
     if (s->do_video) {
         pad = (AVFilterPad){
@@ -250,7 +255,11 @@ static av_cold int init(AVFilterContext *ctx)
         };
         if (!pad.name)
             return AVERROR(ENOMEM);
-        ff_insert_outpad(ctx, 1, &pad);
+        ret = ff_insert_outpad(ctx, 1, &pad);
+        if (ret < 0) {
+            av_freep(&pad.name);
+            return ret;
+        }
     }
 
     return 0;