Convert tests/arp-too-long-tha.pcap to a pcap file.

It was, its name nonwithstanding, a pcapng file, and had an SHB option
that was damaged by fuzzing.  Converting it to pcap

1) means it has the appropriate extension;

2) means that old libpcaps that can't read pcapng can handle it;

3) means that a future libpcap that fully supports pcapng *and* thus
fails on that file can handle it.

1 files changed, 0 insertions, 0 deletions

diff --git a/tests/arp-too-long-tha.pcap b/tests/arp-too-long-tha.pcap
index f7739747..e076962d 100644
--- a/tests/arp-too-long-tha.pcap
+++ b/tests/arp-too-long-tha.pcap