Fixed bug 2430 - Missing initialization of the variable 'centroid' in…

…side SDL_GestureAddTouch

klose

File: SDL_gesture.c
Method: SDL_GestureAddTouch

When a new SDL_GestureTouch element is added to the global SDL_gestureTouch array the variable 'centroid' of the new element is not initialized.

The problem is that this variable is read isndie SDL_GestureProcessEvent when a SDL_FINGERDOWN event occurs.

src/events/SDL_gesture.c

@@ -418,13 +418,8 @@ int SDL_GestureAddTouch(SDL_TouchID touchId)
 
     SDL_gestureTouch = gestureTouch;
 
-    SDL_gestureTouch[SDL_numGestureTouches].numDownFingers = 0;
+    SDL_zero(SDL_gestureTouch[SDL_numGestureTouches]);
     SDL_gestureTouch[SDL_numGestureTouches].id = touchId;
-
-    SDL_gestureTouch[SDL_numGestureTouches].numDollarTemplates = 0;
-
-    SDL_gestureTouch[SDL_numGestureTouches].recording = SDL_FALSE;
-
     SDL_numGestureTouches++;
     return 0;
 }