vty/command.c: drop useless assignment

Change-Id: Ia30b6481ee570c6cf3e3b38e7a78028c66c036b7
diff --git a/src/vty/command.c b/src/vty/command.c
index e50706e..0168462 100644
--- a/src/vty/command.c
+++ b/src/vty/command.c
@@ -1655,7 +1655,7 @@
 	/* Make sure that cmd_vector is filtered based on current word */
 	command = vector_slot(vline, index);
 	if (command)
-		match = cmd_filter(command, cmd_vector, index, any_match);
+		cmd_filter(command, cmd_vector, index, any_match);
 
 	/* Make description vector. */
 	for (i = 0; i < vector_active(cmd_vector); i++) {