(svn r4648) - Fix (r4196): Company HQ's were not upgraded during the monthly loops.

unmovable_map.h

@@ -66,12 +66,13 @@ static inline byte GetCompanyHQSection(TileIndex t)
 
 static inline void EnlargeCompanyHQ(TileIndex t, byte size)
 {
+	size *= 4;
 	if (size <= _m[t].m5 - UNMOVABLE_HQ_NORTH) return;
 
-	_m[t + TileDiffXY(0, 0)].m5 = UNMOVABLE_HQ_NORTH + size * 4;
-	_m[t + TileDiffXY(0, 1)].m5 = UNMOVABLE_HQ_WEST  + size * 4;
-	_m[t + TileDiffXY(1, 0)].m5 = UNMOVABLE_HQ_EAST  + size * 4;
-	_m[t + TileDiffXY(1, 1)].m5 = UNMOVABLE_HQ_SOUTH + size * 4;
+	_m[t + TileDiffXY(0, 0)].m5 = UNMOVABLE_HQ_NORTH + size;
+	_m[t + TileDiffXY(0, 1)].m5 = UNMOVABLE_HQ_WEST  + size;
+	_m[t + TileDiffXY(1, 0)].m5 = UNMOVABLE_HQ_EAST  + size;
+	_m[t + TileDiffXY(1, 1)].m5 = UNMOVABLE_HQ_SOUTH + size;
 }