tdf#157576 and tdf#157635 mask out black pixels
commitb2ca39bc5e424e67e8fc7e8a044214feb09e39f7
authorPatrick Luby <plubius@neooffice.org>
Fri, 6 Oct 2023 19:21:50 +0000 (6 15:21 -0400)
committerPatrick Luby <plubius@neooffice.org>
Fri, 6 Oct 2023 20:31:00 +0000 (6 22:31 +0200)
tree531c1945eec20a2839fc712b160b77ca01edaf7a
parentc76fb134281a3d1fd56f8a6d07ad7111c85e17b9
tdf#157576 and tdf#157635 mask out black pixels

Due to the switch from transparency to alpha in commit
81994cb2b8b32453a92bcb011830fcb884f22ff3, mask out black
pixels in bitmap.

Change-Id: I7cc8c39c20d8ec4fed026c3e27fce24396815d68
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157665
Tested-by: Jenkins
Reviewed-by: Patrick Luby <plubius@neooffice.org>
vcl/source/filter/igif/gifread.cxx