[sssd PR#1000][comment] Support NSS networks database lookups

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/1000
Title: #1000: Support NSS networks database lookups

pbrezina commented:
"""
Thank you. I see these warnings:

```
  CC       src/util/libsss_util_la-domain_info_utils.lo
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c: In function ‘sysdb_getipnetworkbyname’:
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:85:35: error: passing argument 5 of ‘sysdb_search_ipnetworks’ from incompatible pointer type [-Werror=incompatible-pointer-types]
   85 |                                   &res->count, &res->msgs);
      |                                   ^~~~~~~~~~~
      |                                   |
      |                                   unsigned int *
In file included from /home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:27:
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.h:81:41: note: expected ‘size_t *’ {aka ‘long unsigned int *’} but argument is of type ‘unsigned int *’
   81 |                                 size_t *msgs_count,
      |                                 ~~~~~~~~^~~~~~~~~~
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c: In function ‘sysdb_getipnetworkbyaddr’:
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:152:35: error: passing argument 5 of ‘sysdb_search_ipnetworks’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  152 |                                   &res->count, &res->msgs);
      |                                   ^~~~~~~~~~~
      |                                   |
      |                                   unsigned int *
In file included from /home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:27:
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.h:81:41: note: expected ‘size_t *’ {aka ‘long unsigned int *’} but argument is of type ‘unsigned int *’
   81 |                                 size_t *msgs_count,
      |                                 ~~~~~~~~^~~~~~~~~~
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c: In function ‘sysdb_enumnetent’:
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:853:35: error: passing argument 5 of ‘sysdb_search_ipnetworks’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  853 |                                   &res->count, &res->msgs);
      |                                   ^~~~~~~~~~~
      |                                   |
      |                                   unsigned int *
/home/pbrezina/workspace/sssd/src/db/sysdb_ipnetworks.c:643:41: note: expected ‘size_t *’ {aka ‘long unsigned int *’} but argument is of type ‘unsigned int *’
  643 |                                 size_t *msgs_count,
      |                                 ~~~~~~~~^~~~~~~~~~
cc1: all warnings being treated as errors

```

```
$ echo $CFLAGS
-m64 -mtune=generic -fstack-protector-all -Wall -Wextra -Wno-sign-compare -Wshadow -Wunused-variable -Wno-unused-parameter -Wno-error=cpp -O0 -ggdb3 -Werror -Wp,-U_FORTIFY_SOURCE
$ rpm -q gcc
gcc-9.2.1-1.fc31.x86_64
```
"""

See the full comment at https://github.com/SSSD/sssd/pull/1000#issuecomment-607160585