Initialize TLSconn object before passing it to tlsClient().

Reference: /n/sources/patch/httpfile-tlsconn-init
Date: Sun Mar 23 14:17:21 CET 2014
Signed-off-by: antox@ml.lv

--- /sys/src/cmd/ip/httpfile.c	Sun Mar 23 14:16:45 2014
+++ /sys/src/cmd/ip/httpfile.c	Sun Mar 23 14:16:40 2014
@@ -186,6 +186,7 @@
 {
 	TLSconn conn;
 
+	memset(&conn, 0, sizeof conn);
 	if((fd=tlsClient(fd, &conn)) < 0)
 		sysfatal("tlsclient: %r");