Merge branch 'sgravrock-global-errors-rethrow'

- Merges #1347 from @sgravrock

lib/jasmine-core/jasmine.js

@@ -2168,7 +2168,12 @@ getJasmineRequireObj().GlobalErrors = function(j$) {
 
     var onerror = function onerror() {
       var handler = handlers[handlers.length - 1];
-      handler.apply(null, Array.prototype.slice.call(arguments, 0));
+
+      if (handler) {
+        handler.apply(null, Array.prototype.slice.call(arguments, 0));
+      } else {
+        throw arguments[0];
+      }
     };
 
     this.uninstall = function noop() {};