Check if platform is running

Currently it can happen that the platform is already shut down (e.g.
very fast unit test) and then we see ugly exceptions in the log.

This now first check if the platform is actually running before access
it.

Author: laeubi

bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/internal/ObjectContributorManager.java

@@ -658,7 +658,7 @@ private static List removeDups(List list) {
 	 * collection of objects.
 	 */
 	private List getCommonClasses(List objects, List commonAdapters) {
-		if (objects == null || objects.isEmpty()) {
+		if (objects == null || objects.isEmpty() || !Platform.isRunning()) {
 			return null;
 		}
 

bundles/org.eclipse.ui.workbench/eclipseui/org/eclipse/ui/statushandlers/StatusManager.java

@@ -141,7 +141,9 @@ public static StatusManager getManager() {
 
 	private StatusManager() {
 		statusManagerLogListener = new StatusManagerLogListener();
-		Platform.addLogListener(statusManagerLogListener);
+		if (Platform.isRunning()) {
+			Platform.addLogListener(statusManagerLogListener);
+		}
 	}
 
 	private AbstractStatusHandler getStatusHandler() {