integrity execution fix

Author: guybedford

lib/global-eval.js

@@ -52,6 +52,7 @@ var __exec;
   var curSystem;
   var callCounter = 0;
   function preExec(loader, load) {
+    curLoad = load;
     if (callCounter++ == 0)
       curSystem = __global.System;
     __global.System = __global.SystemJS = loader; 

test/test.js

@@ -1090,11 +1090,11 @@ asyncTest('Importing a script with wrong integrity fails', function() {
     }
   });
   System['import']('tests/csp/integrity.js').then(function(m) {
-    ok(true);
-    console.log('SRI not supported in this browser');
+    ok(m.integrity == 'integrity');
     start();
   }, function(e) {
     ok(typeof e !== 'undefined');
+    console.log('SRI not supported in this browser');
     start();
   });
 });