Remove some bad characters from comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59979 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaDecl.cpp

@@ -677,7 +677,7 @@ bool Sema::CheckInitializerTypes(Expr *&Init, QualType &DeclType,
                                  SourceLocation InitLoc,
                                  DeclarationName InitEntity) {
   // C++ [dcl.init.ref]p1:
-  //   A variable declared to be a T&, that isâ "reference to type Tâ"
+  //   A variable declared to be a T&, that is "reference to type T"
   //   (8.3.2), shall be initialized by an object, or function, of
   //   type T or by an object that can be converted into a T.
   if (DeclType->isReferenceType())