From Cal Turney via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8309

Restore an else clause that appears to have been accidentally removed in r44542
which was causing TCP reassembly for SMB2 messages to fail.

svn path=/trunk/; revision=47620

epan/dissectors/packet-nbns.c

@@ -1717,6 +1717,8 @@ dissect_nbss(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
             && tvb_get_guint8(tvb,offset+6) == 'M'
             && tvb_get_guint8(tvb,offset+7) == 'B') {
             is_cifs = TRUE;
+        } else {
+            is_cifs = FALSE;
         }
 
         /*