public Address getSpareDataAddress(Memory memory, Address rtti0Address) {
		int spareDataOffset = getSpareDataOffset(memory.getProgram());
		return getAbsoluteAddress(memory.getProgram(), rtti0Address.add(spareDataOffset));
	}
Gets the address of the spare data, a 0 address if there is no spare data,
or null.
@param memory the program memory containing the address
@param rtti0Address the address for the RTTI 0
@return the address of the spare data, a 0 value, or null.
Ghidra/Features/Base/src/main/java/ghidra/app/util/datatype/microsoft/RTTI0DataType.java