Tap events are not notified correctly.

[makotosato-at]

Hello.

I have encountered problems using a multi-tap display and i.MX8MP board.
In flutter_elinux_view.h/.cc, instance variable touch_event_ is not initialized, so it contains an garbage value.
Therefore, it is not processed correctly in function GgeTouchPoint().

I think it needs to be initialized as follows:

struct touch_event {
    touch_point points[10] = {
      {false, -1, 0, .0, .0}, {false, -1, 0, .0, .0},
      {false, -1, 0, .0, .0}, {false, -1, 0, .0, .0},
      {false, -1, 0, .0, .0}, {false, -1, 0, .0, .0},
      {false, -1, 0, .0, .0}, {false, -1, 0, .0, .0},
      {false, -1, 0, .0, .0}, {false, -1, 0, .0, .0},
    };
  };

[HidenoriMatsubayashi]

Thank you for reporting the bug.