CheckStringInit has side effects; make sure we don't run it in VerifyOnly...

CheckStringInit has side effects; make sure we don't run it in VerifyOnly mode, at least for the moment.  <rdar://problem/10185490>.

Sebastian, please take a look at this; I'm not entirely sure it is the right thing to do.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140552 91177308-0d34-0410-b5e6-96231b3b80d8