Fixed minor typo, gui_hid -> gui_hide.

scene/gui/control.cpp

@@ -591,7 +591,7 @@ void Control::_notification(int p_notification) {
 		case NOTIFICATION_VISIBILITY_CHANGED: {
 			if (!is_visible_in_tree()) {
 				if (get_viewport() != nullptr) {
-					get_viewport()->_gui_hid_control(this);
+					get_viewport()->_gui_hide_control(this);
 				}
 
 				//remove key focus

scene/main/viewport.cpp

@@ -2422,7 +2422,7 @@ void Viewport::_gui_unfocus_control(Control *p_control) {
 	}
 }
 
-void Viewport::_gui_hid_control(Control *p_control) {
+void Viewport::_gui_hide_control(Control *p_control) {
 	if (gui.mouse_focus == p_control) {
 		_drop_mouse_focus();
 	}

scene/main/viewport.h

@@ -387,7 +387,7 @@ private:
 	void _gui_show_tooltip();
 
 	void _gui_remove_control(Control *p_control);
-	void _gui_hid_control(Control *p_control);
+	void _gui_hide_control(Control *p_control);
 
 	void _gui_force_drag(Control *p_base, const Variant &p_data, Control *p_control);
 	void _gui_set_drag_preview(Control *p_base, Control *p_control);