Fix typo: aquire -> acquire

Signed-off-by: Ferenc Wágner <wferi@niif.hu>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>

exec/main.c

@@ -1086,7 +1086,7 @@ retry_fcntl:
 			goto error_close;
 			break;
 		default:
-			log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't aquire lock. Error was %s",
+			log_printf (LOGSYS_LEVEL_ERROR, "Corosync Executive couldn't acquire lock. Error was %s",
 			    strerror(errno));
 			err = COROSYNC_DONE_AQUIRE_LOCK;
 			goto error_close;