YAML::XS - Fix core dump when dumping binary data
- Specific strings resulted in a double free / core dump
 - due to a faulty string comparison and not checking a return value from libyaml
 
use YAML::XS;
Dump([
    "~\0\200",
    "null\0\200",
    "true\0\200",
    "false\0\200",
]);