devel/git-cinnabar: unbreak after r523011
../helper/cinnabar-fast-import.c:591:8: warning: implicit declaration of function 'sha1_to_hex' is invalid in C99 [-Wimplicit-function-declaration]
sha1_to_hex(chunk->node->hash)); ^
../helper/hg-connect.c:266:4: warning: implicit declaration of function 'sha1_to_hex_r' is invalid in C99 [-Wimplicit-function-declaration]
sha1_to_hex_r(&heads_str[13], sha1); ^
ld: error: undefined symbol: sha1_to_hex
referenced by cinnabar-fast-import.c
cinnabar-fast-import.o:(store_file)
ld: error: undefined symbol: sha1_to_hex_r
referenced by hg-connect.c
hg-connect.o:(hg_unbundle)