ecore_wl2_input: fix a way it works when it has multiple input devices

Summary:
if there are multiple input devices, especially touch and mouse type devices simultaneous.
a logic can't recognize the current input device in _ecore_wl2_input_mouse_move_send function.
because focus.touch would not be cleared even touch actions from user has finished.

This patch clears input->focus.touch if users release their finger from touch device.

Reviewers: raster, eagleeye, devilhorns

Reviewed By: devilhorns

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D8673

src/lib/ecore_wl2/ecore_wl2_input.c

@@ -1242,6 +1242,8 @@ _touch_cb_up(void *data, struct wl_touch *touch EINA_UNUSED, unsigned int serial
    if ((input->grab.window) && (input->grab.button == BTN_LEFT) &&
        (!input->grab.count))
      _ecore_wl2_input_ungrab(input);
+
+   input->focus.touch = NULL;
 }
 
 static void