gigaset: fix format string typo in CAPI dial command

A missing dot lead to garbage characters being included in the
dial command generated from a CAPI CONNECT_REQ message, which
interestingly enough worked anyway, illustrating the resilience
of the device.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/gigaset/capi.c

@@ -1254,7 +1254,7 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
 	commands[AT_DIAL] = kmalloc(l+3, GFP_KERNEL);
 	if (!commands[AT_DIAL])
 		goto oom;
-	snprintf(commands[AT_DIAL], l+3, "D%*s\r", l, pp);
+	snprintf(commands[AT_DIAL], l+3, "D%.*s\r", l, pp);
 
 	/* encode parameter: Calling party number */
 	pp = cmsg->CallingPartyNumber;