PM: Fix an inverted condition in simplifyFunctionCFG

I mentioned the issue here in code review way back in September and
was sure we'd fixed it, but apparently we forgot:

  http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20150921/301850.html

In any case, as soon as you try to use this pass in anything but the
most basic pipeline everything falls apart. Fix the condition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257935 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed