Fix some cases were ArrayRefs were being passed by reference.

llvm-svn: 216527

clang/lib/AST/VTableBuilder.cpp

@@ -3129,7 +3129,7 @@ void VFTableBuilder::dumpLayout(raw_ostream &Out) {
 }
 
 static bool setsIntersect(const llvm::SmallPtrSet<const CXXRecordDecl *, 4> &A,
-                          const ArrayRef<const CXXRecordDecl *> &B) {
+                          ArrayRef<const CXXRecordDecl *> B) {
   for (ArrayRef<const CXXRecordDecl *>::iterator I = B.begin(), E = B.end();
        I != E; ++I) {
     if (A.count(*I))