This function informs the system that access to the given library has been concluded. The user must not reference the library or any function in the library after this close.
INPUTS
library
pointer to a library node
NOTES
Starting with Kickstart 2.0 (V36), it is safe to pass a NULL instead of a library pointer.
Library writers must pass a SegList pointer or NULL back from their open point. This value is used by the system, and not visible as a return code from CloseLibrary().