avfilter/vf_hwupload_cuda: check ff_formats_ref for errors

libavfilter/vf_hwupload_cuda.c

@@ -54,6 +54,8 @@ static av_cold void cudaupload_uninit(AVFilterContext *ctx)
 
 static int cudaupload_query_formats(AVFilterContext *ctx)
 {
+    int ret;
+
     static const enum AVPixelFormat input_pix_fmts[] = {
         AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P,
         AV_PIX_FMT_NONE,
@@ -64,8 +66,13 @@ static int cudaupload_query_formats(AVFilterContext *ctx)
     AVFilterFormats *in_fmts  = ff_make_format_list(input_pix_fmts);
     AVFilterFormats *out_fmts = ff_make_format_list(output_pix_fmts);
 
-    ff_formats_ref(in_fmts,  &ctx->inputs[0]->out_formats);
-    ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
+    ret = ff_formats_ref(in_fmts, &ctx->inputs[0]->out_formats);
+    if (ret < 0)
+        return ret;
+
+    ret = ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
+    if (ret < 0)
+        return ret;
 
     return 0;
 }