if_ether.c (svn revision 217315) breakage on i386

[Michael Butler]

cc1: warnings being treated as errors
/usr/home/imb/svn/head/sys/netinet/if_ether.c: In function 'in_arpinput':
/usr/home/imb/svn/head/sys/netinet/if_ether.c:540: warning: format '%ld'
expects type 'long int', but argument 3 has type 'unsigned int'
*** Error code 1

.. where "unsigned int" is actually a "sizeof(struct in_addr)",

	imb