Remove trailing whitespace, fix file path in comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186766 91177308-0d34-0410-b5e6-96231b3b80d8
Disallow global aliases to bitcast between address spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186767 91177308-0d34-0410-b5e6-96231b3b80d8