Unify naming of LangOptions variable/get function across the Clang stack (Lex to AST).

The member variable is always "LangOpts" and the member function is always "getLangOpts".

Reviewed by Chris Lattner

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ItaniumMangle.cpp b/lib/AST/ItaniumMangle.cpp
index fa78227..a4676a6 100644
--- a/lib/AST/ItaniumMangle.cpp
+++ b/lib/AST/ItaniumMangle.cpp
@@ -375,7 +375,7 @@
 
 bool ItaniumMangleContext::shouldMangleDeclName(const NamedDecl *D) {
   // In C, functions with no attributes never need to be mangled. Fastpath them.
-  if (!getASTContext().getLangOptions().CPlusPlus && !D->hasAttrs())
+  if (!getASTContext().getLangOpts().CPlusPlus && !D->hasAttrs())
     return false;
 
   // Any decl can be declared with __asm("foo") on it, and this takes precedence
@@ -392,7 +392,7 @@
     return true;
 
   // Otherwise, no mangling is done outside C++ mode.
-  if (!getASTContext().getLangOptions().CPlusPlus)
+  if (!getASTContext().getLangOpts().CPlusPlus)
     return false;
 
   // Variables at global scope with non-internal linkage are not mangled