Fix MSVC "result of 32-bit shift implicitly converted to 64 bits" warning. NFCI.
Fix MSVC "result of 32-bit shift implicitly converted to 64 bits" warning. NFCI.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@373613 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang