void queueDelaySlotFallthrough(Instruction delaySlotInstruction) {
		InstructionBlockFlow dsFallThrough =
			new InstructionBlockFlow(delaySlotInstruction.getMaxAddress().next(),
				delaySlotInstruction.getAddress(), InstructionBlockFlow.Type.PRIORITY);
		priorityQueue.add(dsFallThrough);
	}
Queue priority delay-slot disassembly for current block.
Fallthrough must be handled immediately with next InstructionSet
to ensure that it remains the start of an InstructionBlock contained 
within current InstructionSet.
Caller is responsible for adding flow to current block.
@param flow instruction flow
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/disassemble/DisassemblerQueue.java