Fixed typo

src/BuildingPlacer.cpp

@@ -79,7 +79,7 @@ bool BuildingPlacer::canBuildHereWithSpace(int bx, int by, const UnitType & type
     // TODO: recalculate start and end positions for addons
 
     // if this rectangle doesn't fit on the map we can't build here
-    if (startx < 0 || starty < 0 || endx > m_bot.Map().width() || endx < bx + width - xdelta || endy > m_bot.Map().height() || endy < bx + height - ydelta)
+    if (startx < 0 || starty < 0 || endx > m_bot.Map().width() || endx < bx + width - xdelta || endy > m_bot.Map().height() || endy < by + height - ydelta)
     {
         return false;
     }