avfilter/vf_zscale: fix typo

[ffmpeg] / libavfilter / avf_showwaves.c

diff --git a/libavfilter/avf_showwaves.c b/libavfilter/avf_showwaves.c
index b75c6666c854f848ee909d709007f91c5912de27..77ff913f3a89cde2672eaa49f8b435762b6efda5 100644 (file)
--- a/libavfilter/avf_showwaves.c
+++ b/libavfilter/avf_showwaves.c
@@ -117,28 +117,25 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterLink *outlink = ctx->outputs[0];
     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
+    int ret;
 
     /* set input audio formats */
     formats = ff_make_format_list(sample_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_formats);
+    if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+        return ret;
 
     layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
+    if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+        return ret;
 
     formats = ff_all_samplerates();
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &inlink->out_samplerates);
+    if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+        return ret;
 
     /* set output video format */
     formats = ff_make_format_list(pix_fmts);
-    if (!formats)
-        return AVERROR(ENOMEM);
-    ff_formats_ref(formats, &outlink->in_formats);
+    if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+        return ret;
 
     return 0;
 }