[SimplifyCFG] Fix a test case.

This was first committed in r317845, but had the order of branch weights
wrong and didn't properly check the output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317848 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed