libavdevice/gdigrab: change hwnd tail check fail logic to !=null

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
7 months ago · 7897b0beed
parent a1976e963f
commit 7897b0beed
1 changed files with 1 additions and 1 deletions
--- a/libavdevice/gdigrab.c
+++ b/libavdevice/gdigrab.c
@ -281,7 +281,7 @@ gdigrab_read_header(AVFormatContext *s1)

        hwnd = (HWND) strtoull(name, &p, 0);

-        if (p == NULL || p == name || p[0] == '\0')
+        if (p == NULL || p == name || p[0] != '\0')
        {
            av_log(s1, AV_LOG_ERROR,
                   "Invalid window handle '%s', must be a valid integer.\n", name);