fix: flush_file error message, try 2

Author: adammoody

src/scr_flush_file.c

@@ -407,7 +407,7 @@ int main (int argc, char *argv[])
     /* failed to read the flush file */
     char* file_path_str = spath_strdup(file_path);
     scr_err("%s: Failed to read flush file '%s' @ %s:%d",
-      PROG, file_path, __FILE__, __LINE__
+      PROG, file_path_str, __FILE__, __LINE__
     );
     scr_free(&file_path_str);
     goto cleanup;