If we don't get any OS information, remove the old OS information.
authorGuy Harris <guy@alum.mit.edu>
Wed, 27 Jul 2016 21:31:21 +0000 (14:31 -0700)
committerGuy Harris <guy@alum.mit.edu>
Wed, 27 Jul 2016 21:32:09 +0000 (21:32 +0000)
commit93d5df468fc9013debe4a30f6f670eeedc01c911
tree3173af97880f436173d4b3c23cb7d5e7c9234e6e
parente8f4fea259bbc7e738ba41331177b5cda0fddc7e
If we don't get any OS information, remove the old OS information.

The old information is copied over from one of the input files; if we
don't have information about the OS on the machine writing the *output*
file, just throw the old information away.

(We need a better way to preserve information from the input files;
perhaps this:

   http://www.winpcap.org/pipermail/pcap-ng-format/2016-June/000362.html

might work.)

Change-Id: Ia25771736d267173f2b6949a91e81e217ee7d16f
Reviewed-on: https://code.wireshark.org/review/16730
Reviewed-by: Guy Harris <guy@alum.mit.edu>
wiretap/merge.c