The old version had an additional underscore, making the declaration
ineffective.
extern nss_endgrent _nss_##module##_endgrent; \
extern nss_endhostent _nss_##module##_endhostent; \
extern nss_endnetent _nss_##module##_endnetent; \
- extern nss_endnetgrent _nss_##module##__endnetgrent; \
+ extern nss_endnetgrent _nss_##module##_endnetgrent; \
extern nss_endprotoent _nss_##module##_endprotoent; \
extern nss_endpwent _nss_##module##_endpwent; \
extern nss_endrpcent _nss_##module##_endrpcent; \