Remove some non-ASCII in comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63866 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 1edb470..cb65900 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -3469,8 +3469,8 @@
        Fun != Ovl->function_end(); ++Fun) {
     // C++ [over.over]p3:
     //   Non-member functions and static member functions match
-    //   targets of type “pointer-to-function”or
-    //   “reference-to-function.” Nonstatic member functions match targets of
+    //   targets of type "pointer-to-function" or "reference-to-function."
+    //   Nonstatic member functions match targets of
     //   type "pointer-to-member-function."
     // Note that according to DR 247, the containing class does not matter.
     if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(*Fun)) {