Wireshark crashes when calling TreeItem:set_len() on TreeItem without tvb

This issue was migrated from bug 5941 in our old bug tracker.

Original bug information:

Reporter: Tony Trinh
Status: RESOLVED FIXED
Product: Wireshark
Component: GTK+ UI
OS: Mac OS X 10.6
Platform: x86-64
Version: 1.4.6

Attachments:

wireshark-bin_2011-05-21-194307_tron.crash: Mac OS X crash report
test.lua: Foo Protocol test dissector
test.pcap: Sample pcap that exercises crash

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