Diffusion FreeBSD src repository ac3153434fcc

Adjust function definitions in geom_event.c to avoid clang 15 warnings
ac3153434fcc
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Description

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

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

sys/geom/geom_event.c:261:13: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
g_run_events()
            ^
             void
sys/geom/geom_event.c:405:12: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
g_do_wither()
           ^
            void
sys/geom/geom_event.c:449:13: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
g_event_init()
            ^
             void

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

MFC after: 3 days