Releases all resources allocated to a GStaticRecMutex.
You don't have to call this functions for a GStaticRecMutex with an
unbounded lifetime, i.e. objects declared 'static', but if you have
a GStaticRecMutex as a member of a structure and the structure is
freed, you should also free the GStaticRecMutex.
Releases all resources allocated to a GStaticRecMutex. You don't have to call this functions for a GStaticRecMutex with an unbounded lifetime, i.e. objects declared 'static', but if you have a GStaticRecMutex as a member of a structure and the structure is freed, you should also free the GStaticRecMutex.