Add a test case based on review feedback

Author: AaronBallman

clang/test/C/C2y/n3411.c

@@ -1,14 +1,15 @@
-// RUN: %clang_cc1 -verify=c2y -std=c2y -Wall -pedantic %s
+// RUN: %clang_cc1 -verify=good -std=c2y -Wall -pedantic %s
 // RUN: %clang_cc1 -verify -Wnewline-eof -std=c2y -Wall -pedantic %s
 // RUN: %clang_cc1 -verify -std=c23 -Wall -pedantic %s
+// RUN: %clang_cc1 -verify=good -std=c23 %s
 
 /* WG14 N3411: Yes
  * Slay Some Earthly Demons XII
  *
  * Allow a non-empty source file to end without a final newline character. Note
  * that this file intentionally does not end with a trailing newline.
  */
-// c2y-no-diagnostics
+// good-no-diagnostics
 
 int x; // Ensure the file contains at least one declaration.
 // expected-warning {{no newline at end of file}}