[LVI] Const correct and rename the LVILatticeVal parameter to getPredicateResult. NFC

Previously it was non-const reference named Result which would tend to make someone think that it was an outparam when really its an input.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305114 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed