grep: avoid leak of chartables in PCRE2

94da9193a6 ("grep: add support for PCRE v2", 2017-06-01) introduced
a small memory leak visible with valgrind in t7813.

Complete the creation of a PCRE2 specific variable that was missing from
the original change and free the generated table just like it is done
for PCRE1.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/grep.h b/grep.h
index 526c2db9ef..533165c21a 100644
--- a/grep.h
+++ b/grep.h
@@ -96,6 +96,7 @@ struct grep_pat {
 	pcre2_compile_context *pcre2_compile_context;
 	pcre2_match_context *pcre2_match_context;
 	pcre2_jit_stack *pcre2_jit_stack;
+	const uint8_t *pcre2_tables;
 	uint32_t pcre2_jit_on;
 	kwset_t kws;
 	unsigned fixed:1;