Merge branch 'jk/no-looking-at-dotgit-outside-repo'

A small code cleanup.

* jk/no-looking-at-dotgit-outside-repo:
  sha1_name: make wraparound of the index into ring-buffer explicit

Author: gitster

sha1_name.c

@@ -510,7 +510,8 @@ const char *find_unique_abbrev(const unsigned char *sha1, int len)
 {
 	static int bufno;
 	static char hexbuffer[4][GIT_SHA1_HEXSZ + 1];
-	char *hex = hexbuffer[3 & ++bufno];
+	char *hex = hexbuffer[bufno];
+	bufno = (bufno + 1) % ARRAY_SIZE(hexbuffer);
 	find_unique_abbrev_r(hex, sha1, len);
 	return hex;
 }