[mutter/wip/carlosg/mode-switch-fix-40: 4/5] backends/native: Fix logic error

[Carlos Garnacho <carlosg src gnome org>]

commit 8d4b5c025677dfd0db855f40e1fdcbf90e81381a
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Jul 7 18:31:10 2021 +0200

    backends/native: Fix logic error
    
    ClutterInputDevice's get_group_n_modes() vfunc is meant to return
    -1 for groups that are out of the known range, not within. Fix the
    early return condition, and let the native backend return correctly
    the number of modes for the given group.
    
    (Cherry-picked from commit 841ee0a2273b680b3b44e18ee9106ee3980bfb36)

 src/backends/native/meta-input-device-native.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/backends/native/meta-input-device-native.c b/src/backends/native/meta-input-device-native.c
index fb77a07790..468aef5576 100644
--- a/src/backends/native/meta-input-device-native.c
+++ b/src/backends/native/meta-input-device-native.c
@@ -161,7 +161,7 @@ meta_input_device_native_get_group_n_modes (ClutterInputDevice *device,
 {
   MetaInputDeviceNative *device_native = META_INPUT_DEVICE_NATIVE (device);
 
-  if (!device_native->modes || group < device_native->modes->len)
+  if (!device_native->modes || group >= device_native->modes->len)
     return -1;
 
   return g_array_index (device_native->modes, int, group);