shachain: add shachain_next_index()
[ccan] / ccan / crypto / shachain / test /
drwxr-xr-x   ..
-rw-r--r-- 1292 run-8bit.c
-rw-r--r-- 866 run-badhash.c
-rw-r--r-- 772 run-can_derive.c
-rw-r--r-- 1286 run.c