Merge commit '39e07ac9fcaf3d412f9a33f427072e8ded032d24' into release/2.4

* commit '39e07ac9fcaf3d412f9a33f427072e8ded032d24':
  ansi: check ff_set_dimensions return value

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/ansi.c

@@ -90,9 +90,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
     s->fg          = DEFAULT_FG_COLOR;
     s->bg          = DEFAULT_BG_COLOR;
 
-    if (!avctx->width || !avctx->height)
-        ff_set_dimensions(avctx, 80 << 3, 25 << 4);
-
+    if (!avctx->width || !avctx->height) {
+        int ret = ff_set_dimensions(avctx, 80 << 3, 25 << 4);
+        if (ret < 0)
+            return ret;
+    }
     return 0;
 }