(svn r16539) [0.7] -Backport from trunk:

- Fix: When finding duplicate graphics sets favour the more complete one (r16538)
- Fix: [Squirrel] Crash that occured when an AI was halted while one or more generators were still in a 'running' state [FS#2942] (r16534)
- Fix: [Squirrel] Do not copy an object when we just checked that the pointer to it is NULL (r16532)
- Fix: Notify small UFOs on deletion of road vehicles, so they can head for somewhere else instead of stumbling over a ghost (r16525)
- Update: a few languages.

src/saveload/afterload.cpp

@@ -8,6 +8,7 @@
 #include "../window_func.h"
 #include "../fios.h"
 #include "../train.h"
+#include "../roadveh.h"
 #include "../string_func.h"
 #include "../gamelog.h"
 #include "../network/network.h"
@@ -1822,6 +1823,19 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (CheckSavegameVersion(121)) {
+		/* Delete small ufos heading for non-existing vehicles */
+		Vehicle *v;
+		FOR_ALL_VEHICLES(v) {
+			if (v->type == VEH_DISASTER && v->subtype == 2/*ST_SMALL_UFO*/ && v->current_order.GetDestination() != 0) {
+				const Vehicle *u = IsValidVehicleID(v->dest_tile) ? GetVehicle(v->dest_tile) : NULL;
+				if (u == NULL || u->type != VEH_ROAD || !IsRoadVehFront(u)) {
+					delete v;
+				}
+			}
+		}
+	}
+
 	GamelogPrintDebug(1);
 
 	bool ret = InitializeWindowsAndCaches();