Clean up a bunch of spec global variable leaks

Also some formatting changes to highlight when using one 'var' with comma operator

spec/core/ExceptionsSpec.js

@@ -35,7 +35,7 @@ describe('Exceptions:', function() {
         env.it('should be a passing test that runs after exceptions are thrown from a async test', secondTest);
       });
 
-      expectations = function() {
+      var expectations = function() {
         expect(secondTest).toHaveBeenCalled();
         done();
       };
@@ -55,7 +55,7 @@ describe('Exceptions:', function() {
       });
       env.describe("a suite that doesn't throw an exception", secondDescribe);
 
-      expectations = function() {
+      var expectations = function() {
         expect(secondDescribe).toHaveBeenCalled();
         done();
       };