rxrpc: Be consistent about switch value in rxrpc_send_call_packet()

rxrpc_send_call_packet() should use type in both its switch-statements
rather than using pkt->whdr.type.  This might give the compiler an easier
job of uninitialised variable checking.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index aa05072..0b21ed8 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -182,7 +182,7 @@
 			     &msg, iov, ioc, len);
 
 	if (ret < 0 && call->state < RXRPC_CALL_COMPLETE) {
-		switch (pkt->whdr.type) {
+		switch (type) {
 		case RXRPC_PACKET_TYPE_ACK:
 			rxrpc_propose_ACK(call, pkt->ack.reason,
 					  ntohs(pkt->ack.maxSkew),