Fix CreateShortcut parameters

Author: iakov

installer/packages/qreal-base/ru.qreal.root.desktop_shortcut/meta/installscript.qs

@@ -6,8 +6,9 @@ Component.prototype.createOperations = function()
 {
     component.createOperations();
     if (installer.value("os") === "win") {
-        component.addOperation("CreateShortcut", "C:\\Windows\\System32\\wscript.exe //nologo //e:vbscript //b // \"@TargetDir@\\" +
-                                    installer.executableName + installer.execExtension +"\""
-            , "@DesktopDir@\\@ProductName@ @Version@" + installer.linkExtension, "iconPath=@TargetDir@\\trik-studio.ico");
+        var wscript = installer.environmentVariable("windir")+"\\system32\\wscript.exe"
+        component.addOperation("CreateShortcut", wscript, "@DesktopDir@\\@ProductName@ @Version@" + installer.linkExtension,
+            "//nologo //e:vbscript //b // \"@TargetDir@\\" + installer.executableName + installer.execExtension +"\"",
+            "iconPath=@TargetDir@\\trik-studio.ico");
     }
 }