block-sha1/sha1.c: silence compiler complaints by casting void * to char *
block-sha1/sha1.c: silence compiler complaints by casting void * to char *

Some compilers produce errors when arithmetic is attempted on pointers to
void.  We want computations done on byte addresses, so cast them to char *
to work them around.

Signed-off-by: Brandon Casey <77bc9a9984e6786c5799d7a71768cf023120ef76@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git