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xdiff/xprepare: fix a memory leak

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The xdl_prepare_env() function may initialise an xdlclassifier_t
data structure via xdl_init_classifier(), which allocates memory
to several fields, for example 'rchash', 'rcrecs' and 'ncha'.
If this function later exits due to the failure of xdl_optimize_ctxs(),
then this xdlclassifier_t structure, and the memory allocated to it,
is not cleaned up.

In order to fix the memory leak, insert a call to xdl_free_classifier()
before returning.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ramsay Jones 2016-03-04 23:10:50 +00:00 committed by Junio C Hamano
parent 5cd6978a9c
commit 87f1625836
1 changed files with 1 additions and 0 deletions
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xdiff/xprepare.c
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@ -301,6 +301,7 @@ int xdl_prepare_env(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
xdl_free_ctx(&xe->xdf2);
xdl_free_ctx(&xe->xdf1);
xdl_free_classifier(&cf);
return -1;
}