update: recursively purge deleted directories

When a directory is deleted, MPD deleted only the directory from the
database; it did not bother to walk the full tree to free all memory
and to remove deleted songs from the playlist.  Replace a
dirvec_delete() with delete_directory().

NEWS

@@ -60,6 +60,7 @@ ver 0.14.2 (2009/??/??)
   - shout: clear buffer before calling the encoder
 * mapper: remove trailing slashes from music_directory
 * player: set player error when output device fails
+* update: recursively purge deleted directories
 
 
 ver 0.14.1 (2009/01/17)

src/update.c

@@ -225,7 +225,7 @@ removeDeletedFromDirectory(struct directory *directory)
 			continue;
 
 		g_debug("removing directory: %s", dv->base[i]->path);
-		dirvec_delete(dv, dv->base[i]);
+		delete_directory(dv->base[i]);
 		modified = true;
 	}