Get rid of trailing whitespace.

Commit generated by command:

find -type f ! -path '*.git*' ! -path '*.png' ! -path '*.ico' ! -path \
    '*.ogg' | xargs -I '{}' sed -i '{}' -e 's/\t*$//g' -e 's/ *$//g'

src/client/houses.h

@@ -100,7 +100,7 @@ public:
     HouseList getHouseList() { return m_houses; }
     HouseList filterHouses(uint32 townId);
 
-private:    
+private:
     HouseList m_houses;
 
 protected:

src/client/mapview.cpp

@@ -87,7 +87,7 @@ void MapView::draw(const Rect& rect)
     int drawFlags = 0;
     // First branch:
     // This is unlikely to be false because a lot of us
-    // don't wanna hear their GPU fan while playing a 
+    // don't wanna hear their GPU fan while playing a
     // 2D game.
     //
     // Second & Third branch:

src/client/minimap.cpp

@@ -412,7 +412,7 @@ void Minimap::saveOtmm(const std::string& fileName)
                 fin->write(compressBuffer.data(), len);
             }
         }
-    
+
         // end of file
         Position invalidPos;
         fin->addU16(invalidPos.x);

src/client/tile.cpp

@@ -161,7 +161,7 @@ void Tile::draw(const Point& dest, float scaleFactor, int drawFlags, LightView *
     if(drawFlags & Otc::DrawOnTop)
         for(const ThingPtr& thing : m_things)
             if(thing->isOnTop())
-                thing->draw(dest, scaleFactor, animate, lightView); 
+                thing->draw(dest, scaleFactor, animate, lightView);
 
     // draw translucent light (for tiles beneath holes)
     if(hasTranslucentLight() && lightView) {
@@ -482,7 +482,7 @@ ThingPtr Tile::getTopMultiUseThing()
         if(thing->isForceUse())
             return thing;
     }
-    
+
     for(uint i = 0; i < m_things.size(); ++i) {
         ThingPtr thing = m_things[i];
         if(!thing->isGround() && !thing->isGroundBorder() && !thing->isOnBottom() && !thing->isOnTop()) {

src/client/uiminimap.cpp

@@ -65,7 +65,7 @@ bool UIMinimap::setZoom(int zoom)
     else
         m_scale = 1;
     m_layout->update();
-    
+
     onZoomChange(zoom, oldZoom);
     return true;
 }