ext/taglib/gsttaglib.h: Fix left-over gst_my_filter_get_type.

Original commit message from CVS:
* ext/taglib/gsttaglib.h:
Fix left-over gst_my_filter_get_type.

common @ f1c7bfd2

-Subproject commit 9200457d08a57f0d7eaeb56915804fa8faf14418
+Subproject commit f1c7bfd24d0fcc4e5113ce3b96b1fac83a9ec560

ext/taglib/gsttaglibmux.h

@@ -55,7 +55,7 @@ typedef struct _GstTagLibMuxClass {
   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TAGLIB_MUX))
 
 /* Standard function returning type information. */
-GType gst_my_filter_get_type (void);
+GType gst_tag_lib_mux_get_type (void);
 
 G_END_DECLS