Fix new glibc warnings about warn_unused_result.
[ccan] / ccan / antithread /
drwxr-xr-x   ..
-rw-r--r-- 452 _info.c
-rw-r--r-- 10014 antithread.c
-rw-r--r-- 1742 antithread.h
drwxr-xr-x - examples
drwxr-xr-x - test