Fix tests

Some conditions were missing in `MacroRoleAttr` checking

Author: rxwei

lib/Sema/TypeCheckAttr.cpp

@@ -6986,16 +6986,18 @@ void AttributeChecker::visitMacroRoleAttr(MacroRoleAttr *attr) {
       // TODO: Check property observer names?
       break;
     case MacroRole::MemberAttribute:
-      diagnoseAndRemoveAttr(attr, diag::macro_cannot_introduce_names,
-                            getMacroRoleString(attr->getMacroRole()));
+      if (!attr->getNames().empty())
+        diagnoseAndRemoveAttr(attr, diag::macro_cannot_introduce_names,
+                              getMacroRoleString(attr->getMacroRole()));
       break;
     case MacroRole::Member:
       break;
     case MacroRole::Peer:
       break;
     case MacroRole::Conformance:
-      diagnoseAndRemoveAttr(attr, diag::macro_cannot_introduce_names,
-                            getMacroRoleString(attr->getMacroRole()));
+      if (!attr->getNames().empty())
+        diagnoseAndRemoveAttr(attr, diag::macro_cannot_introduce_names,
+                              getMacroRoleString(attr->getMacroRole()));
       break;
     default:
       diagnoseAndRemoveAttr(attr, diag::invalid_macro_role_for_macro_syntax,