New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/29607#issuecomment-817240809

Comment:
```
 session.c: In function 'iscsi_sessions_get':
session.c:294:14: error: implicit declaration of function 'reallocarray' [-Werror=implicit-function-declaration]
  294 |  *sessions = reallocarray(*sessions, *session_count, sizeof(struct iscsi_session *));
```

either add an inline definition of the function as a patch (acceptable) or wait for musl 1.2.2