private String getVarTypeName(DIEAggregate diea) {
		return diea.getTag() == DW_TAG_formal_parameter ? "Parameter" : "Variable";
	}
If this is a static/global variable, stored at a ram address, return it's
ram address.

@return address of where this variable is stored, null if not ram address
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFVariable.java