Fix bug in `SpaceBeforeBrace` linter

When using `{` in single quotes.

Change-Id: Idc1a527ba12a9b014f6b0a3afad55b61c82faa3a
Reviewed-on: http://gerrit.causes.com/36949
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>