libpkg: correctly re-fetch meta.conf if it's missing

pkg_repo_binary_update currently passes along the timestamp of the database
if the meta.conf is missing, but this is slightly incorrect: if the
meta.conf is missing but we pass in the timestamp of the database, we may
get an incorrect EPKG_UPTODATE because we do not realize that work does need
to be done.

Fix it by moving the got_meta check up one if() to avoid the stat call if we
don't have the .meta, forcing the refetch.

Signed-off-by: Kyle Evans <[email protected]>

Author: kevans91

libpkg/repo/binary/update.c

@@ -624,8 +624,8 @@ pkg_repo_binary_update(struct pkg_repo *repo, bool force)
 
 		snprintf(filepath, sizeof(filepath), "%s/%s", ctx.dbdir,
 			pkg_repo_binary_get_filename(pkg_repo_name(repo)));
-		if (stat(filepath, &st) != -1) {
-			if (!got_meta && !force)
+		if (got_meta && stat(filepath, &st) != -1) {
+			if (!force)
 				t = st.st_mtime;
 		}
 	}