ConformanceLookup: catch ReferenceStorageType

While this doesn't provde defence agianst incorrect conformance
responses in the general case, it should flush out a lot of incorrect
ones.

Author: kavon

lib/AST/ConformanceLookup.cpp

@@ -565,13 +565,16 @@ LookupConformanceInModuleRequest::evaluate(
 #ifndef NDEBUG
   // Ensure we haven't missed queries for the specialty SIL types
   // in the AST in conformance to one of the invertible protocols.
-  if (auto kp = protocol->getKnownProtocolKind())
-    if (getInvertibleProtocolKind(*kp))
+  if (auto kp = protocol->getKnownProtocolKind()) {
+    if (getInvertibleProtocolKind(*kp)) {
       assert(!(type->is<SILFunctionType,
                         SILBoxType,
                         SILMoveOnlyWrappedType,
                         SILPackType,
                         SILTokenType>()));
+      assert(!type->is<ReferenceStorageType>());
+    }
+  }
 #endif
 
   auto nominal = type->getAnyNominal();