swscale: use av_clip_uint8() in yuv2yuv1_c().

[ffmpeg] / cmdutils.c

diff --git a/cmdutils.c b/cmdutils.c
index f95778822eb206a10e1205e7eda50c8bd0f0291d..feeea694d818f0e76470b83d8c0abdff910d42b6 100644 (file)
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -281,8 +281,8 @@ unknown_opt:
                     fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt);
                     exit(1);
                 }
-            } else {
-                po->u.func_arg(arg);
+            } else if (po->u.func_arg) {
+                    po->u.func_arg(arg);
             }
             if(po->flags & OPT_EXIT)
                 exit(0);