private void processFlags(int val) {
		varargsPushedRightToLeft = ((val & 0x0001) == 0x0001);
		val >>= 1;
		returneeCleansUpStack = ((val & 0x0001) == 0x0001);
	}
Tells whether the returnee is responsible for cleaning up the stack.
@return TruE if the returnee is responsible for cleaning up the stack.
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb2/pdbreader/symbol/ReturnDescriptionMsSymbol.java