Fix use after free problem in libsemanage conf-parse

[HuaxinLu]

My environment:

# cat /etc/fedora-release 
Fedora release 34 (Thirty Four)
# rpm -qa libsemanage
libsemanage-3.2-1.fc34.x86_64

Set /etc/selinux/semanage.conf as follows:

......
module-store = foo.com:4242
......
bzip-blocksize=11
......

Use semanage command to add a file context:

# semanage fcontext -a -t bin_t /home/test
error parsing semanage configuration file: bzip-blocksize can only be in the range 0-9
free(): double free detected in tcache 2
Aborted (core dumped)

The patch has been submitted to mail list (here):

[fishilico]

Thanks for the report! The patch has been applied: 6bff61c