Diffusion FreeBSD src repository 5e1097f83cbe

Adjust function definitions in route_ctl.c to avoid clang 15 warnings
5e1097f83cbe
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Description

Adjust function definitions in route_ctl.c to avoid clang 15 warnings

With clang 15, the following -Werror warnings are produced:

sys/net/route/route_ctl.c:130:17: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
vnet_rtzone_init()
                ^
                 void
sys/net/route/route_ctl.c:139:20: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
vnet_rtzone_destroy()
                   ^
                    void

This is because vnet_rtzone_init() and vnet_rtzone_destroy() are
declared with (void) argument lists, but defined with empty argument
lists. Make the definitions match the declarations.

MFC after: 3 days