Client aborts if timezone not correctly detected

A client with logging enabled will crash if for some reason the detection of the timezone fails.

LD_PRELOAD=~/var/projects/gekkofs/prefix/lib/libgkfs_intercept.so LIBGKFS_LOG=hermes,mercury LIBGKFS_LOG_OUTPUT=/dev/stderr LIBGKFS_LOG_DEBUG_VERBOSITY=2 ~/var/projects/gekkofs/source/test/build/gkfs_test_dir
terminate called after throwing an instance of 'std::runtime_error'
  what():  Unable to extract leap second information
Aborted (core dumped)