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cem
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2017-03-04T20:46:57.505467Z
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V 489
fts: Fix a potential memory leak in error case

Dan Krejsa reports a potential memory leak in an fts_build error case,
detected by Coverity.  (It doesn't seem to show up in Coverity Scan, so I
don't have a CID to point to.)

I don't know whether it is actually possible to arrive in this case with a
non-empty 'head' list.  The cost is low, though.  One additional branch in a
terminal error case isn't the end of the world.

PR:		217125
Submitted by:	Dan Krejsa <dan.krejsa at gmail.com>

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