compile error in Git v2.7.0-rc0

Probably because I have NO_IPV6 defined.

ident.c: In function ‘canonical_name’:
ident.c:89:37: error: ‘buf’ undeclared (first use in this function)
  struct hostent *he = gethostbyname(buf);
                                     ^
ident.c:89:37: note: each undeclared identifier is reported only once
for each function it appears in
make: *** [ident.o] Fout 1