Merge branch 'rs/fix-unlink-unix-socket'

The unix-domain socket used by the sample credential cache daemon
tried to unlink an existing stale one at a wrong path, if the path
to the socket was given as an overlong path that does not fit in
sun_path member of the sockaddr_un structure.

* rs/fix-unlink-unix-socket:
  unix-socket: remove stale socket before calling chdir()

Author: gitster

unix-socket.c

@@ -99,11 +99,12 @@ int unix_stream_listen(const char *path)
 	struct sockaddr_un sa;
 	struct unix_sockaddr_context ctx;
 
+	unlink(path);
+
 	if (unix_sockaddr_init(&sa, path, &ctx) < 0)
 		return -1;
 	fd = unix_stream_socket();
 
-	unlink(path);
 	if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0)
 		goto fail;