RBIL61 - INT 31 - DPMI 0.9+ - FREE MEMORY BLOCK {protected mode}

INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - FREE MEMORY BLOCK
	AX = 0502h
	SI:DI = handle of memory block
Return: CF clear if successful
	CF set on error
	    AX = error code (DPMIsee DOS Protected-Mode Interface 1.0+) (8023h) (see #03143)
Note:	any selectors allocated for the memory block must also be freed,
	  preferably before freeing the memory block
SeeAlso: AX=0001h,AX=0101h,AX=0501h,AX=0D01h