Add support for generating (very basic) C++ destructors. These aren't called by anything yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69343 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 7cb5e43..4cb1b43 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -1367,6 +1367,9 @@
   case Decl::CXXConstructor:
     EmitCXXConstructors(cast<CXXConstructorDecl>(D));
     break;
+  case Decl::CXXDestructor:
+    EmitCXXDestructors(cast<CXXDestructorDecl>(D));
+    break;
         
   // Objective-C Decls