[mutter] backends/native: Get the correct value for pinch dy

[Carlos Garnacho <carlosg src gnome org>]

commit 67d9995280de34b44875cfd5e5df37bf492387f5
Author: Yariv Barkan <nushoin users noreply github com>
Date:   Fri Dec 13 21:27:43 2019 +0200

    backends/native: Get the correct value for pinch dy
    
    Fix a typo - use the correct libinput api.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/974

 src/backends/native/meta-device-manager-native.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/backends/native/meta-device-manager-native.c 
b/src/backends/native/meta-device-manager-native.c
index 7fa289c8f..c1fa4978c 100644
--- a/src/backends/native/meta-device-manager-native.c
+++ b/src/backends/native/meta-device-manager-native.c
@@ -1537,7 +1537,7 @@ process_device_event (MetaDeviceManagerNative *manager_evdev,
         angle_delta = libinput_event_gesture_get_angle_delta (gesture_event);
         scale = libinput_event_gesture_get_scale (gesture_event);
         dx = libinput_event_gesture_get_dx (gesture_event);
-        dy = libinput_event_gesture_get_dx (gesture_event);
+        dy = libinput_event_gesture_get_dy (gesture_event);
 
         notify_pinch_gesture_event (device,
                                     CLUTTER_TOUCHPAD_GESTURE_PHASE_UPDATE,