[X86] combineVSelectWithAllOnesOrZeros - cleanup variable names. NFCI.

We were reusing the 'false' select value 'is zero' variable name for the 'true' select value 'is zero' variable name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313528 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed