Would you like to add more error handling for return values from functions like the following? - [printf](http://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html) ⇒ [main](https://github.com/robertswiecki/intrace/blob/728ffd9e640ce55b3a238a8d58b009b424e4d4f7/intrace.c#L38) - [pthread_mutex_lock](http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutex_lock.html) ⇒ [ipv6_icmp_sock_ready](https://github.com/robertswiecki/intrace/blob/e2ea5759d7e8b6ec4958a9faed77e93ad4e436ac/ipv6.c#L280)
Would you like to add more error handling for return values from functions like the following?