[Bug 774834] gst-plugins-good / flic decoder: Buffer overflow in flx_decode_delta_fli

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=774834

--- Comment #2 from Hanno Boeck <hanno at hboeck.de> ---
The fix seems to work, but clang shows this warning:
afl-clang-fast 2.35b by <lszekeres at google.com>
gstflxdec.c:322:33: error: comparison of unsigned expression < 0 is always
false [-Werror,-Wtautological-compare]
        if ((glong) row - count < 0) {
            ~~~~~~~~~~~~~~~~~~~ ^ ~
gstflxdec.c:332:33: error: comparison of unsigned expression < 0 is always
false [-Werror,-Wtautological-compare]
        if ((glong) row - count < 0) {
            ~~~~~~~~~~~~~~~~~~~ ^ ~

So some checks are probably not working due to signed/unsigned issues.

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