GCC 14 newly by default treats as errors a number of situations which
before were only warnings.  For more information see
https://gcc.gnu.org/gcc-14/porting_to.html and meta bug #1220571.

Because of this, package polkit fails to compile.  This can be seen online
at:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:Gcc7/polkit/standard/x86_64

It can be reproduced locally with command: osc build --clean
--alternative-project home:rguenther:nextgcc

It seems that Gentoo have fixed a similar issue in
https://bugs.gentoo.org/898556 but then there is also
https://bugs.gentoo.org/925440 which we may need too.


The (first) error (that halts the build) is:

[   17s] ../subprojects/mocklibc-1.0/src/netgroup-debug.c: In function
‘netgroup_debug_print_entry’:
[   17s] ../subprojects/mocklibc-1.0/src/netgroup-debug.c:25:3: error: implicit
declaration of function ‘print_indent’ [-Wimplicit-function-declaration]
[   17s]    25 |   print_indent(stream, indent);
[   17s]       |   ^~~~~~~~~~~~