crt: test: Do not return from t_tls_dll_native_process_detach test on non-success

Test's PE TLS callback changes exit code to 0. So use TerminateProcess() on non-success.

Signed-off-by: LIU Hao <lh_mouse@126.com>
diff --git a/mingw-w64-crt/testcases/t_tls_dll_native_process_detach.c b/mingw-w64-crt/testcases/t_tls_dll_native_process_detach.c
index fd86e6d..bf8a9f6 100644
--- a/mingw-w64-crt/testcases/t_tls_dll_native_process_detach.c
+++ b/mingw-w64-crt/testcases/t_tls_dll_native_process_detach.c
@@ -17,7 +17,8 @@
 
   if (_osplatform == VER_PLATFORM_WIN32_WINDOWS) {
     printf("PE TLS callbacks are not supported on Win9x\n");
-    return 77;
+    /* exit, _exit, or ExitProcess calls TLS callbacks, so use TerminateProcess() which is not calling them */
+    TerminateProcess(GetCurrentProcess(), 77);
   }
 
   /* Force linking libtlsnatprocdet.dll library */