protected int getCallotherOpNumber(PcodeOp op) {
		return getIntConst(op.getInput(0));
	}
Get the userop number of a {@link PcodeOp#CALLOTHER callother} op

@param op the op
@return the userop number (const input 0)
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/exec/PcodeExecutor.java