Makefile: don't define -Werror for ccanlint.
[ccan] / ccan / typesafe_cb /
drwxr-xr-x   ..
lrwxrwxrwx 23 LICENSE -> ../../licenses/LGPL-2.1
-rw-r--r-- 4424 _info
drwxr-xr-x - test
-rw-r--r-- 4960 typesafe_cb.h