Tag: destructor calls Clear()

Eliminate duplicate code.

src/tag/Tag.cxx

@@ -74,16 +74,6 @@ Tag::Clear()
 	num_items = 0;
 }
 
-Tag::~Tag()
-{
-	tag_pool_lock.lock();
-	for (int i = num_items; --i >= 0; )
-		tag_pool_put_item(items[i]);
-	tag_pool_lock.unlock();
-
-	delete[] items;
-}
-
 Tag::Tag(const Tag &other)
 	:time(other.time), has_playlist(other.has_playlist),
 	 items(nullptr),

src/tag/Tag.hxx

@@ -71,7 +71,9 @@ struct Tag {
 	/**
 	 * Free the tag object and all its items.
 	 */
-	~Tag();
+	~Tag() {
+		Clear();
+	}
 
 	Tag &operator=(const Tag &other) = delete;