Use more ArrayRefs

No functional change is intended, just a small refactoring.

llvm-svn: 273647
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index 8eeaef7..8c0e9ea 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -11823,7 +11823,7 @@
                   diag::err_operator_overload_static) << FnDecl->getDeclName();
   } else {
     bool ClassOrEnumParam = false;
-    for (auto Param : FnDecl->params()) {
+    for (auto Param : FnDecl->parameters()) {
       QualType ParamType = Param->getType().getNonReferenceType();
       if (ParamType->isDependentType() || ParamType->isRecordType() ||
           ParamType->isEnumeralType()) {
@@ -11845,7 +11845,7 @@
   // Only the function-call operator allows default arguments
   // (C++ [over.call]p1).
   if (Op != OO_Call) {
-    for (auto Param : FnDecl->params()) {
+    for (auto Param : FnDecl->parameters()) {
       if (Param->hasDefaultArg())
         return Diag(Param->getLocation(),
                     diag::err_operator_overload_default_arg)
@@ -12110,7 +12110,7 @@
 
   // A parameter-declaration-clause containing a default argument is not
   // equivalent to any of the permitted forms.
-  for (auto Param : FnDecl->params()) {
+  for (auto Param : FnDecl->parameters()) {
     if (Param->hasDefaultArg()) {
       Diag(Param->getDefaultArgRange().getBegin(),
            diag::err_literal_operator_default_argument)