Fix warnings.

pqTabBarEventPlayer.cxx

@@ -108,7 +108,7 @@ bool pqTabBarEventPlayer::playEvent(
             std::cout << "DEBUG: Could not find request tab-pane on "
               << pqObjectNaming::GetName(*tab_bar).toAscii().data() << ". Using "
               << pqObjectNaming::GetName(*sibling_tab_bar).toAscii().data() << " instead."
-              << endl;
+              << std::endl;
             sibling_tab_bar->setCurrentIndex(cc);
             return true;
             }