Set the "last data" time to "last ping" time when updating the latter

This is required because the PING can be received quite a bit earlier
than it is actually handled, for example during "server burst" or other
heavy operations:
So the times won't match and PING-PONG logic would become garbled,
because we test for "last ping > last data" to determine if a PING
already was sent or not.

src/ngircd/conn-func.c

@@ -51,7 +51,7 @@ GLOBAL void
 Conn_UpdatePing(CONN_ID Idx)
 {
 	assert(Idx > NONE);
-	My_Connections[Idx].lastping = time(NULL);
+	My_Connections[Idx].lastping = My_Connections[Idx].lastdata = time(NULL);
 }
 
 /*