[llvm-rc] Fix DIALOG(EX) parsing ability (parser, pt 5/8).

This fixes a use-after-free bug that was noticed by a sanitizer buildbot
(http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/7502).

Differential Revision: https://reviews.llvm.org/D37271

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312028 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed