NFC: Correct a declaration in TypeCheckerTypeIDZone.def.

Author: tshortli

include/swift/AST/TypeCheckRequests.h

@@ -4405,7 +4405,7 @@ class SerializeAttrGenericSignatureRequest
     : public SimpleRequest<SerializeAttrGenericSignatureRequest,
                            GenericSignature(const AbstractFunctionDecl *,
                                             SpecializeAttr *),
-                           RequestFlags::Cached> {
+                           RequestFlags::SeparatelyCached> {
 public:
   using SimpleRequest::SimpleRequest;
 

include/swift/AST/TypeCheckerTypeIDZone.def

@@ -501,5 +501,5 @@ SWIFT_REQUEST(TypeChecker, ExpandChildTypeRefinementContextsRequest,
               bool(Decl *, TypeRefinementContext *),
               Cached, NoLocationInfo)
 SWIFT_REQUEST(TypeChecker, SerializeAttrGenericSignatureRequest,
-              bool(Decl *, SpecializeAttr *),
-              Cached, NoLocationInfo)
+              GenericSignature(Decl *, SpecializeAttr *),
+              SeparatelyCached, NoLocationInfo)