Remove trailing whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173322 91177308-0d34-0410-b5e6-96231b3b80d8
MipsISelLowering.cpp: Fix a warning. [-Wunused-variable]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173323 91177308-0d34-0410-b5e6-96231b3b80d8
MipsISelLowering.cpp: Fix a warning, take two. [-Wunused-variable]

...and fix a typo, s/#ifdef/#ifndef/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173324 91177308-0d34-0410-b5e6-96231b3b80d8