fix crash when finding init script

riverguile.c

@@ -375,7 +375,10 @@ static char *get_script_path (void)
 	for (size_t i = 0; i < (sizeof(paths) / sizeof(paths[0])); i++)
 	{
 		if ( path != NULL )
+		{
 			free(path);
+			path = NULL;
+		}
 
 		/* Path needs env var, but it is not set. */
 		if ( paths[i].needs_env && paths[i].env == NULL )