https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2817
           Summary: wireshark/tshark deletes files it can't open
           Product: Wireshark
           Version: 1.0.2
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: Low
         Component: TShark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: TenToThe9@xxxxxxxxxxx
Build Information:
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Despite not being able to open a file requested with -w, tshark will delete the
file before exiting.  The GUI version, wireshark exhibits the same behavior.
Reproduce with:
1: tshark -w /tmp/a.dump (file created with -rw-------)
2: chown user /tmp/a.dump
3: tshark -w /tmp/a.dump (fails, says it can't open the file, permission
denied)
4: ls -l /tmp/a.dump (No such file...)
Expected behavior: leave the file there.
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