Remove trailing ';' from C_SYSINIT() macro definition, in keeping

with style(9) recommendation that macros not contain the
terminating ';', leaving that to the invoker.  All SYSINIT()
consumers must now provide a trailing ';'.

Unlike the change to remove the ';'s from callers, this change
shouldn't be MFC'd unless we don't mind requiring source changes
to third party modules that might still depend on SYSINIT()
providing its own ';'.

sys/sys/kernel.h

@@ -232,7 +232,7 @@ struct sysinit {
 		func,						\
 		(ident)						\
 	};							\
-	DATA_SET(sysinit_set,uniquifier ## _sys_init);
+	DATA_SET(sysinit_set,uniquifier ## _sys_init)
 
 #define	SYSINIT(uniquifier, subsystem, order, func, ident)	\
 	C_SYSINIT(uniquifier, subsystem, order,			\