types/wlr_input_device: call the specialized input device destroy function on destroy

In case the `wlr_input_device` is not owned by a specialized input device, the
function will finish the wlr_input_device and call it's implementation destroy
function if an implementation has been supplied, or simply free it.

include/wlr/interfaces/wlr_input_device.h

@@ -25,6 +25,12 @@ void wlr_input_device_init(struct wlr_input_device *wlr_device,
  */
 void wlr_input_device_finish(struct wlr_input_device *wlr_device);
 
+/**
+ * Calls the specialized input device destroy function.
+ * If the wlr_input_device is not owned by a specialized input device, the
+ * function will finish the wlr_input_device, and either call its implementation
+ * destroy function if one has been given, or free the wlr_input_device.
+ */
 void wlr_input_device_destroy(struct wlr_input_device *dev);
 
 #endif

types/wlr_input_device.c

@@ -41,8 +41,6 @@ void wlr_input_device_destroy(struct wlr_input_device *dev) {
 		return;
 	}
 
-	wlr_signal_emit_safe(&dev->events.destroy, dev);
-
 	if (dev->_device) {
 		switch (dev->type) {
 		case WLR_INPUT_DEVICE_KEYBOARD:
@@ -63,17 +61,13 @@ void wlr_input_device_destroy(struct wlr_input_device *dev) {
 		case WLR_INPUT_DEVICE_TABLET_PAD:
 			wlr_tablet_pad_destroy(dev->tablet_pad);
 			break;
-		default:
-			wlr_log(WLR_DEBUG, "Warning: leaking memory %p %p %d",
-					dev->_device, dev, dev->type);
-			break;
 		}
-	}
-	free(dev->name);
-	free(dev->output_name);
-	if (dev->impl && dev->impl->destroy) {
-		dev->impl->destroy(dev);
 	} else {
-		free(dev);
+		wlr_input_device_finish(dev);
+		if (dev->impl && dev->impl->destroy) {
+			dev->impl->destroy(dev);
+		} else {
+			free(dev);
+		}
 	}
 }