vf_colorspace: Check av_frame_copy_props() return value

This function can potentially allocate memory.
Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavfilter/vf_colorspace.c

@@ -861,7 +861,11 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
         av_frame_free(&in);
         return AVERROR(ENOMEM);
     }
-    av_frame_copy_props(out, in);
+    res = av_frame_copy_props(out, in);
+    if (res < 0) {
+        av_frame_free(&in);
+        return res;
+    }
 
     out->color_primaries = s->user_prm == AVCOL_PRI_UNSPECIFIED ?
                            default_prm[FFMIN(s->user_all, CS_NB)] : s->user_prm;