sftp-client.c warning clean up.

[mouring at etoh.eviladmin.org]

--- ../openssh/sftp-client.c	Fri Feb  9 08:44:24 2001
+++ sftp-client.c	Fri Feb  9 19:14:01 2001
@@ -331,7 +331,7 @@
 				error("Couldn't read directory: %s",
 				    fx2txt(status));
 				do_close(fd_in, fd_out, handle, handle_len);
-				return(NULL);
+				return(0);
 			}
 		} else if (type != SSH2_FXP_NAME)
 			fatal("Expected SSH2_FXP_NAME(%d) packet, got %d",