From 0c3126eb70a4d52f65692e9649e6f60a1a1b3a2b Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno@kn-bremen.de>
Date: Sun, 16 Sep 2018 11:25:34 +0200
Subject: [PATCH] fix non-drifting ships crash

---
 src/move.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/move.c b/src/move.c
index 70425b72e..227277ab6 100644
--- a/src/move.c
+++ b/src/move.c
@@ -855,7 +855,7 @@ static void drifting_ships(region * r)
                 }
             }
 
-            if (firstu != NULL) {
+            if (rnext && firstu) {
                 message *msg = msg_message("ship_drift", "ship dir", sh, dir);
                 msg_to_ship_inmates(sh, &firstu, &lastu, msg);
             }
@@ -873,7 +873,7 @@ static void drifting_ships(region * r)
                 sink_ship(sh);
                 remove_ship(shp, sh);
             }
-            else if (rnext != NULL) {
+            else if (rnext) {
                 /* Das Schiff und alle Einheiten darin werden nun von r
                     * nach rnext verschoben. Danach eine Meldung. */
                 add_regionlist(&route, rnext);