strmap: set errno to ENOENT even if we return NULL.
[ccan] / ccan / strmap /
drwxr-xr-x   ..
-rw-r--r-- 1476 _info
-rw-r--r-- 5144 strmap.c
-rw-r--r-- 6102 strmap.h
drwxr-xr-x - test