[Bug-tar] [PATCH] tar: do not crash with --listed-incremental

[Kamil Dudka]

Hello,

enclosed is a patch that prevents tar from dereferencing NULL with
--listed-incremental.  The bug was introduced in 2b1bffb.  Original bug 
report, including a reproducer and backtrace, is located in our bugzilla:

https://bugzilla.redhat.com/635318

I must admit I don't understand much the code, but the attached patch at least 
solves the reported crash.  Thanks in advance for review!

Kamil

0001-tar-do-not-crash-with-listed-incremental.patch
Description: Text Data