[PATCH nft] parser_bison: memleak in rate limit parser

[Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>]

Direct leak of 13 byte(s) in 1 object(s) allocated from:
    #0 0x7fb49ad79810 in strdup (/usr/lib/x86_64-linux-gnu/libasan.so.5+0x3a810)
    #1 0x7fb496b8f63a in xstrdup /home/pablo/nftables/src/utils.c:85
    #2 0x7fb496c9a79d in nft_lex /home/pablo/nftables/src/scanner.l:740
    [...]

Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
 src/parser_bison.y | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/parser_bison.y b/src/parser_bison.y
index e405c80af1ff..872d7cdb92ad 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -4553,6 +4553,7 @@ limit_config		:	RATE	limit_mode	NUM	SLASH	time_unit	limit_burst_pkts
 				uint64_t rate, unit;
 
 				erec = rate_parse(&@$, $4, &rate, &unit);
+				xfree($4);
 				if (erec != NULL) {
 					erec_queue(erec, state->msgs);
 					YYERROR;
-- 
2.20.1