fix faulty method equality check

Author: arcticnotes

lib/wsh/host.js

@@ -112,7 +112,7 @@ function encodePotentialMethod( target, prop) {
 	var item;
 	for( i in REFERENCES) {
 		item = REFERENCES[ i];
-		if( item.type === 'potential-method' && item.target === target, item.prop === prop)
+		if( item.type === 'potential-method' && item.target === target && item.prop === prop)
 			return { type: 'funref', value: i};
 	}
 	i = '' + nextRefId++;
@@ -176,9 +176,9 @@ function decodePotentialMethod( encoded) {
 					args = decode( input[ 3]);
 					if( target[ 'potential-method']) {
 						if( thisArg === undefined)
-							throw new Error( 'potentially a method, can only be used as such');
+							throw new Error( 'potentially a method, use with a "this"');
 						if( thisArg !== target.target)
-							throw new Error( 'potentially a method, can only be used as such');
+							throw new Error( 'potentially a method, "this" has changed');
 						switch( args.length) {
 							case 0: output = [ 'value', encode( target.target[ target.prop]())]; break;
 							case 1: output = [ 'value', encode( target.target[ target.prop]( args[ 0]))]; break;