parser_bison: release extended priority string after parsing

==29581==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1034 byte(s) in 152 object(s) allocated from:
    #0 0x7f7b55f1b810 in strdup (/usr/lib/x86_64-linux-gnu/libasan.so.5+0x3a810)
    #1 0x7f7b559597e0 in xstrdup /home/pablo/devel/scm/git-netfilter/nftables/src/utils.c:75
    #2 0x7f7b55a494a0 in nft_lex /home/pablo/devel/scm/git-netfilter/nftables/src/scanner.l:641
    #3 0x7f7b559cec25 in nft_parse /home/pablo/devel/scm/git-netfilter/nftables/src/parser_bison.c:5792
    #4 0x7f7b5597e318 in nft_parse_bison_filename /home/pablo/devel/scm/git-netfilter/nftables/src/libnftables.c:392
    #5 0x7f7b5597f864 in nft_run_cmd_from_filename /home/pablo/devel/scm/git-netfilter/nftables/src/libnftables.c:495
    #6 0x562a25bbce71 in main /home/pablo/devel/scm/git-netfilter/nftables/src/main.c:457
    #7 0x7f7b5457509a in __libc_start_main ../csu/libc-start.c:308

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/src/parser_bison.y b/src/parser_bison.y
index 3cd0559b2912e86e23efdf351a8412811fb576e8..0190dbb88c97fe943dc8fba07348bc99f7b17ae3 100644 (file)
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -2167,6 +2167,7 @@ extended_prio_spec        :       int_num
                                                                BYTEORDER_HOST_ENDIAN,
                                                                strlen(str) * BITS_PER_BYTE,
                                                                str);
+                               xfree($1);
                                $$ = spec;
                        }
                        ;