This document defines the coverage for the pthread_cond_destroy function:

Assertion	Tested?
1		YES
2		YES
3		YES
4		NO  * When it specifies it 'may' fail and not 'shall' fail,
		      it will always return PASS, but will return a
		      PASS and print out a warning if it fails.
		    * EBUSY is tested
NOTE:
