Debian: the Lintian complains about "shlib-calls-exit" in ha_spider.so

This is a split from MDEV-8378, priority and fix version inherited.

Lintian reports: http://labs.seravo.fi/~otto/mariadb-repo/mariadb-10.0-sid-amd64/lintian-0f7cb30.log and https://lintian.debian.org/tags/shlib-calls-exit.html

The listed shared library calls the C library exit() or _exit() functions.

In the case of an error, the library should instead return an appropriate error code to the calling program which can then determine how to handle the error, including performing any required clean-up.

In most cases, removing the call should be discussed with upstream, particularly as it may produce an ABI change.

Severity: wishlist, Certainty: possible

Check: shared-libs, Type: binary, udeb

This tag is marked experimental, which means that the code that generates it is not as well-tested as the rest of Lintian and might still give surprising results. Feel free to ignore experimental tags that do not seem to make sense, though of course bug reports are always welcome.

nm ./storage/spider/ha_spider.so|grep exit

                 U __cxa_atexit@@GLIBC_2.2.5

                 U _exit@@GLIBC_2.2.5

00000000000b74f0 T _ZN4dena10fatal_exitEPKc

00000000000b74c0 T _ZN4dena10fatal_exitERK6String