udhcp missing prototypes

[Robert P. J. Day]

  after "make defconfig", during the build:

.../udhcp/packet.c:24: warning: no previous prototype for
'udhcp_init_header'
... and more of the same ...

  the problem appears to be in libbb_udhcp.h:

#define init_header             udhcp_init_header
#define get_packet              udhcp_get_packet
#define checksum                udhcp_checksum
#define raw_packet              udhcp_raw_packet
#define kernel_packet           udhcp_kernel_packet
... etc ...

  thoughts?

rday