Merge branch 'maint'

* maint:
  Do not use errno when pread() returns 0
  git init: --bare/--shared overrides system/global config
  git-push.txt: Describe --repo option in more detail
  git rm: refresh index before up-to-date check
  Fix a few typos in relnotes

index-pack.c

@@ -365,8 +365,11 @@ static void *get_data_from_pack(struct object_entry *obj)
 	data = src;
 	do {
 		ssize_t n = pread(pack_fd, data + rdy, len - rdy, from + rdy);
-		if (n <= 0)
+		if (n < 0)
 			die("cannot pread pack file: %s", strerror(errno));
+		if (!n)
+			die("premature end of pack file, %lu bytes missing",
+			    len - rdy);
 		rdy += n;
 	} while (rdy < len);
 	data = xmalloc(obj->size);