Raises an exception when an unmatched </if> occurs

Review URL: https://codereview.chromium.org/1002663003/
Patch from François Beaufort <beaufort.francois@gmail.com>!


git-svn-id: http://grit-i18n.googlecode.com/svn/trunk@189 7262f16d-afe8-6277-6482-052fa10e57b1
2 files changed