minor tweak to make ws code work in blocking mode properly when used outside sofia

libs/sofia-sip/libsofia-sip-ua/tport/ws.c

@@ -630,7 +630,7 @@ ssize_t ws_read_frame(wsh_t *wsh, ws_opcode_t *oc, uint8_t **data)
 		return ws_close(wsh, WS_PROTO_ERR);
 	}
 
-	if ((wsh->datalen = ws_raw_read(wsh, wsh->buffer, 9, WS_NOBLOCK)) < 0) {
+	if ((wsh->datalen = ws_raw_read(wsh, wsh->buffer, 9, wsh->block)) < 0) {
 		if (wsh->datalen == -2) {
 			return -2;
 		}