use macro instead of literal ".pack"
diff --git a/lib/pack.c b/lib/pack.c
index dcf3756..1c06e34 100644
--- a/lib/pack.c
+++ b/lib/pack.c
@@ -107,7 +107,7 @@ get_packfile_size(size_t *size, const char *path)
free(path_pack);
if (err)
return err;
- } else if (strcmp(dot, ".pack") == 0) {
+ } else if (strcmp(dot, GOT_PACKFILE_SUFFIX) == 0) {
if (stat(path, &sb) != 0)
return got_error_from_errno();
} else