LiveIntervalAnalysis: Fix handleMove() using wrong value numbers

handleMove() was incorrectly swapping two value numbers. This was missed
before because the problem only occured when moving subregister definitions
and needed -verify-machineinstrs to be detected.

I cannot add a testcase as long as I cannot reapply r260905/r260806.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267840 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed