[Bug] memory leak in tcpprep with using include/exclude

[fklassen]

Describe the bug
Memory leak in tcprep when using include or exclude options

To Reproduce
Steps to reproduce the behavior:

1. ../configure --with-testnic=enp0s5 --with-testnic2=enp0s5 --enable-asan
2. make
3. tcpprep -i ../test/test.pcap -o /dev/null -c '96.17.211.0/24' --exclude 'P:61-65,88-91' '

Expected behavior
no failed tests

Screenshots
❯ tcpprep -i ../test/test.pcap -o /dev/null -c '96.17.211.0/24' --exclude 'P:61-65,88-91'

=================================================================
==528235==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 24 byte(s) in 1 object(s) allocated from:
#0 0xffffa7dca2f4 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
#1 0xaaaae77ce578 in our_safe_malloc ../../../src/common/utils.c:42
#2 0xaaaae77ca1a0 in new_list ../../../src/common/list.c:43
#3 0xaaaae77ca48c in parse_list ../../../src/common/list.c:83
#4 0xaaaae77cde3c in parse_xX_str ../../../src/common/xX.c:82
#5 0xaaaae77bff14 in doOptExclude /home/parallels/git/tcpreplay/build/src/tcpprep_opts.c:1463
#6 0xaaaae77d3b60 in handle_opt ../../libopts/autoopts.c:200
#7 0xaaaae77e76ac in regular_opts ../../libopts/autoopts.c:264
#8 0xaaaae77ef9d8 in optionProcess ../../libopts/autoopts.c:348
#9 0xaaaae77c0b3c in main ../../src/tcpprep.c:81
#10 0xffffa7aa73f8 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#11 0xffffa7aa74c8 in __libc_start_main_impl ../csu/libc-start.c:392
#12 0xaaaae77bf3ec in _start (/home/parallels/git/tcpreplay/build/src/tcpprep+0xf3ec)

Indirect leak of 24 byte(s) in 1 object(s) allocated from:
#0 0xffffa7dca2f4 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
#1 0xaaaae77ce578 in our_safe_malloc ../../../src/common/utils.c:42
#2 0xaaaae77ca1a0 in new_list ../../../src/common/list.c:43
#3 0xaaaae77ca6cc in parse_list ../../../src/common/list.c:116
#4 0xaaaae77cde3c in parse_xX_str ../../../src/common/xX.c:82
#5 0xaaaae77bff14 in doOptExclude /home/parallels/git/tcpreplay/build/src/tcpprep_opts.c:1463
#6 0xaaaae77d3b60 in handle_opt ../../libopts/autoopts.c:200
#7 0xaaaae77e76ac in regular_opts ../../libopts/autoopts.c:264
#8 0xaaaae77ef9d8 in optionProcess ../../libopts/autoopts.c:348
#9 0xaaaae77c0b3c in main ../../src/tcpprep.c:81
#10 0xffffa7aa73f8 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#11 0xffffa7aa74c8 in __libc_start_main_impl ../csu/libc-start.c:392
#12 0xaaaae77bf3ec in _start (/home/parallels/git/tcpreplay/build/src/tcpprep+0xf3ec)

SUMMARY: AddressSanitizer: 48 byte(s) leaked in 2 allocation(s).

System (please complete the following information):

• OS: Linux
• OS version: Debian 11
• Tcpreplay Version: 4.5.0-beta1

[fklassen]

Resolved in PR #870