Merge branch 'wip/chergert/fix-macos-warnings' into 'main'

Fixes a few compilation warnings on macOS

See merge request GNOME/gtk!5415

gdk/gdkdisplay.c

@@ -1777,11 +1777,11 @@ gdk_display_init_egl (GdkDisplay  *self,
 gpointer
 gdk_display_get_egl_display (GdkDisplay *self)
 {
+#ifdef HAVE_EGL
   GdkDisplayPrivate *priv = gdk_display_get_instance_private (self);
 
   g_return_val_if_fail (GDK_IS_DISPLAY (self), NULL);
 
-#ifdef HAVE_EGL
   if (!priv->egl_display &&
       !gdk_display_prepare_gl (self, NULL))
     return NULL;

gdk/macos/gdkmacoscursor.c

@@ -23,6 +23,10 @@
 
 #include "gdkmacoscursor-private.h"
 
+@interface NSCursor()
+-(long long)_coreCursorType;
+@end
+
 /* OS X only exports a number of cursor types in its public NSCursor interface.
  * By overriding the private _coreCursorType method, we can tell OS X to load
  * one of its internal cursors instead (since cursor images are loaded on demand

gsk/gl/gskgldriver.c

@@ -184,7 +184,7 @@ gsk_gl_driver_shader_weak_cb (gpointer  data,
     }
 }
 
-G_GNUC_NULL_TERMINATED static inline GBytes *
+G_GNUC_UNUSED G_GNUC_NULL_TERMINATED static inline GBytes *
 join_sources (GBytes *first_bytes,
               ...)
 {