Fix a gcc warning.

Thanks to Filipe Cabecinhas for the report.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220361 91177308-0d34-0410-b5e6-96231b3b80d8
Handle spaces and quotes in file names in MRI scripts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220364 91177308-0d34-0410-b5e6-96231b3b80d8