[IndVars] Improved logging under DEBUG(); NFC.

Before this, we'd print the modified comparision in the "Simplified
comparison" case.  That looked misleading.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244264 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed