Fix clang-cl warning

client/mysqltest.cc

@@ -589,7 +589,7 @@ static void cleanup_and_exit(int exit_code);
 ATTRIBUTE_NORETURN
 void really_die(const char *msg);
 void report_or_die(const char *fmt, ...);
-void die(const char *fmt, ...);
+ATTRIBUTE_NORETURN void die(const char *fmt, ...);
 static void make_error_message(char *buf, size_t len, const char *fmt, va_list args);
 ATTRIBUTE_NORETURN ATTRIBUTE_FORMAT(printf, 1, 2)
 void abort_not_supported_test(const char *fmt, ...);
@@ -1461,7 +1461,7 @@ void free_used_memory()
 }
 
 
-static void cleanup_and_exit(int exit_code)
+ATTRIBUTE_NORETURN static void cleanup_and_exit(int exit_code)
 {
   free_used_memory();