NCGenerics: avoid UGT's in queries

An unbound generic type is not something that should end up in
`isNoncopyable` or `isEscapable` queries because there are no
conformances for such a type; it's unbound!

fixes test/Constraints/closures.swift

Author: kavon

lib/AST/ConformanceLookup.cpp

@@ -831,6 +831,8 @@ static bool conformsToInvertible(CanType type, InvertibleProtocolKind ip) {
   // Must not have a type parameter!
   assert(!type->hasTypeParameter() && "caller forgot to mapTypeIntoContext!");
 
+  assert(!type->hasUnboundGenericType() && "a UGT has no conformances!");
+
   assert(!type->is<PackExpansionType>());
 
   // The SIL types in the AST do not have real conformances, and should have

lib/Sema/TypeCheckDecl.cpp

@@ -2564,7 +2564,8 @@ static Type validateParameterType(ParamDecl *decl) {
   }
 
   // Validate the presence of ownership for a parameter with an inverse applied.
-  if (diagnoseMissingOwnership(ctx, dc, ownership,
+  if (!Ty->hasUnboundGenericType() &&
+      diagnoseMissingOwnership(ctx, dc, ownership,
                                decl->getTypeRepr(), Ty, options)) {
     decl->setInvalid();
     return ErrorType::get(ctx);