Wrap the open and closed list members in path finding.

This prevent some weird things happening in path finding when
playing for a very long time.

Reviewed-by: Thorbjorn.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/map.h b/src/map.h
index 160cb7f7..22ca68c4 100644
--- a/src/map.h
+++ b/src/map.h
@@ -56,7 +56,7 @@ struct MetaTile
     int Fcost;               /**< Estimation of total path cost */
     int Gcost;               /**< Cost from start to this location */
     int Hcost;               /**< Estimated cost to goal */
-    int whichList;           /**< No list, open list or closed list */
+    unsigned whichList;      /**< No list, open list or closed list */
     int parentX;             /**< X coordinate of parent tile */
     int parentY;             /**< Y coordinate of parent tile */
     unsigned char blockmask; /**< Blocking properties of this tile */
@@ -363,7 +363,7 @@ class Map : public Properties
         /**
          * Blockmasks for different entities
          */
-        int *mOccupation[NB_BLOCKTYPES];
+        unsigned *mOccupation[NB_BLOCKTYPES];
 
         int mWidth, mHeight;
         int mTileWidth, mTileHeight;
@@ -377,7 +377,7 @@ class Map : public Properties
         int mDebugFlags;
 
         // Pathfinding members
-        int mOnClosedList, mOnOpenList;
+        unsigned mOnClosedList, mOnOpenList;
 
         // Overlay data
         std::list<AmbientLayer*> mBackgrounds;