Fix a type in a comment
Fix a type in a comment

Thanks to Sean Silva for pointing it out.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@258410 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit fb1664ee8e8adaa2708406ce1de4ed7cfca2d16b)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm