Use 'const Decl *' throughout code completion in Sema


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173277 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXScopeSpec.cpp b/lib/Sema/SemaCXXScopeSpec.cpp
index 979c05b..85efe2d 100644
--- a/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/lib/Sema/SemaCXXScopeSpec.cpp
@@ -263,7 +263,7 @@
 
 /// \brief Determines whether the given declaration is an valid acceptable
 /// result for name lookup of a nested-name-specifier.
-bool Sema::isAcceptableNestedNameSpecifier(NamedDecl *SD) {
+bool Sema::isAcceptableNestedNameSpecifier(const NamedDecl *SD) {
   if (!SD)
     return false;
 
@@ -279,7 +279,7 @@
   QualType T = Context.getTypeDeclType(cast<TypeDecl>(SD));
   if (T->isDependentType())
     return true;
-  else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
+  else if (const TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
     if (TD->getUnderlyingType()->isRecordType() ||
         (Context.getLangOpts().CPlusPlus11 &&
          TD->getUnderlyingType()->isEnumeralType()))