(test_main): Pass dummy file

name to config_parse_string.

Rev: src/testsuite/parse-config-test.c:1.2.4.1

src/testsuite/parse-config-test.c

@@ -97,7 +97,7 @@ int
 test_main(void)
 {
   struct config_group *config
-    = config_parse_string(strlen(config_file), config_file);
+    = config_parse_string("test data", strlen(config_file), config_file);
 
   if (!config)
     FAIL();