Fix error message when linear targets gets handed more than 2 arguments.
[Alasdair Kergon]
--- diff/drivers/md/dm-linear.c	2003-08-26 13:59:04.000000000 +0100
+++ source/drivers/md/dm-linear.c	2003-08-26 16:28:31.000000000 +0100
@@ -27,7 +27,7 @@
 	struct linear_c *lc;
 
 	if (argc != 2) {
-		ti->error = "dm-linear: Not enough arguments";
+		ti->error = "dm-linear: Invalid argument count";
 		return -EINVAL;
 	}