[PATCH] BUG/MEDIUM: map: Fix memory leak in the map converter

[Nenad Merdanovic]

The allocated trash chunk is not freed properly and causes a memory leak
exhibited as the growth in the trash pool allocations. Bug was introduced
in commit 271022 (BUG/MINOR: map: fix map_regm with backref).

This should be backported to all branches where the above commit was
backported.
---
 src/map.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/map.c b/src/map.c
index 903c5b26..cf148930 100644
--- a/src/map.c
+++ b/src/map.c
@@ -207,6 +207,8 @@ static int sample_conv_map(const struct arg *arg_p, struct 
sample *smp, void *pr
                                                  tmptrash->area,
                                                  pat->data->u.str.area,
                                                  (regmatch_t *)smp->ctx.a[0]);
+                               free_trash_chunk(tmptrash);
+
                                if (len == -1)
                                        return 0;
 
-- 
2.19.1