During the destructor of QWidget, we delete the
layout. If the layout is not set to 0 afterwards,
a check on the layout might turn true, but any access
will end with a segfault.
Reviewed-by: João Abecasis
(cherry picked from commit abc5a632942c23496d75c49b3b0b4a674cdafdf8)
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12