Properly handle cases where tradable/marketable/commodity is actually…

… a bool

lib/classes/EconItem.js

@@ -29,9 +29,9 @@ function EconItem(item) {
 	this.market_actions = fixArray(this.market_actions);
 	this.tags = fixTags(this.tags);
 
-	this.tradable = !!parseInt(this.tradable, 10);
-	this.marketable = !!parseInt(this.marketable, 10);
-	this.commodity = !!parseInt(this.commodity, 10);
+	this.tradable = fixBool(this.tradable);
+	this.marketable = fixBool(this.marketable);
+	this.commodity = fixBool(this.commodity);
 	this.market_tradable_restriction = (this.market_tradable_restriction ? parseInt(this.market_tradable_restriction, 10) : 0);
 	this.market_marketable_restriction = (this.market_marketable_restriction ? parseInt(this.market_marketable_restriction, 10) : 0);
 
@@ -43,6 +43,10 @@ function EconItem(item) {
 	}
 }
 
+function fixBool(val) {
+	return typeof val == 'boolean' ? val : !!parseInt(val, 10);
+}
+
 function fixArray(obj) {
 	if (typeof obj === 'undefined' || obj == '') {
 		return [];