tree c386c6ea98fb3c382d3cc523eb364e1ac4442ea0
parent 5436c7529dd9b24f62e3df10e30d5da53da16efd
author Mark Wielaard <mark@klomp.org> 1587859841 +0200
committer Mark Wielaard <mark@klomp.org> 1587861436 +0200

libdwfl: Fix double free on failure path in gzip.c.

GCC10 -fanalyzer found a double free when openstream failed. When
openstream fails __libdw_gunzip will call fail, which frees the
state->buffer. But openstream can call zlib_fail, which will also
call fail. Instead of calling zlib_fail, just return the error
that zlib_fail would have returned.

Signed-off-by: Mark Wielaard <mark@klomp.org>