Bug 1241767 - avoid default-only switch to placate MSVC. r=bbouvier

--HG--
extra : rebase_source : 1fdd34673328fed761f8554be5dc551d597399a4
extra : amend_source : 4185a5973e979f15fbb3da2b51b64f1dabb01033

js/src/vm/GlobalObject.cpp

@@ -93,16 +93,18 @@ js::GlobalObject::getTypedObjectModule() const {
 /* static */ bool
 GlobalObject::skipDeselectedConstructor(JSContext* cx, JSProtoKey key)
 {
+#ifdef ENABLE_SHARED_ARRAY_BUFFER
     // Return true if the given constructor has been disabled at run-time.
     switch (key) {
-#ifdef ENABLE_SHARED_ARRAY_BUFFER
       case JSProto_Atomics:
       case JSProto_SharedArrayBuffer:
         return !cx->compartment()->creationOptions().getSharedMemoryAndAtomicsEnabled();
-#endif
       default:
         return false;
     }
+#else
+    return false;
+#endif
 }
 
 /* static */ bool