Fixed: exportQuirk modifies original circuit

Author: perak

lib/quantum-circuit.js

@@ -5735,12 +5735,11 @@ QuantumCircuit.prototype.exportQuirk = function(decompose) {
 	}
 
 	// decompose
-	if(decompose) {
-		circuit = new QuantumCircuit();
-		circuit.load(this.save(true));
-	} else {
-		circuit = this;
-	}
+	var obj = this.save(decompose);
+	var circuit = new QuantumCircuit();
+	var tempCircuit = new QuantumCircuit();
+	circuit.load(obj);
+	tempCircuit.load(obj);
 
 	var quirk = {
 		cols: [],
@@ -5754,8 +5753,6 @@ QuantumCircuit.prototype.exportQuirk = function(decompose) {
 	var gateLocations = {};
 	var customGateCircuit = new QuantumCircuit();
 
-	var tempCircuit = new QuantumCircuit();
-	tempCircuit.load(this.save(decompose));
 
 	var gatesToBeAdded = [];
 
@@ -5797,7 +5794,7 @@ QuantumCircuit.prototype.exportQuirk = function(decompose) {
 		if(gateToAdd){
 			circuit.addGate(gateToAdd.name, gateToAdd.column, gateToAdd.wires, gateToAdd.options);
 		}
-	})
+	});
 
 	var numCols = circuit.numCols();
 	for(var column = 0; column < numCols; column++) {