doc: trivial typo in git-format-patch.txt

diff --git a/tree-diff.c b/tree-diff.c
index 290a1da4ce5c3504dd75e584030a4a00fbdbe9a2..4dda9a14abacbf38ba19fcf89b2ef54576a26538 100644 (file)
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -124,8 +124,8 @@ static struct combine_diff_path *path_appendnew(struct combine_diff_path *last,
        unsigned mode, const unsigned char *sha1)
 {
        struct combine_diff_path *p;
-       int len = base->len + pathlen;
-       int alloclen = combine_diff_path_size(nparent, len);
+       size_t len = st_add(base->len, pathlen);
+       size_t alloclen = combine_diff_path_size(nparent, len);
 
        /* if last->next is !NULL - it is a pre-allocated memory, we can reuse */
        p = last->next;