selectionChanged(): Add missing null check

Issue-Ref: 3246
Issue-Url: https://af3-developer.fortiss.org/issues/3246



Signed-off-by: Simon Barner <barner@fortiss.org>

org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/.ratings

 ApplicationActionBarAdvisor.java 3e7c0fd992586e6ca7724b871eb0b2cf59244028 GREEN
 ApplicationWorkbenchAdvisor.java ef25d5783a4f75e88334fd679834a6e0421f8c2f GREEN
 ApplicationWorkbenchWindowAdvisor.java da5cb38300b384579532c678fbc9faa961c2ca6b GREEN
-CurrentObjectiveContributionItem.java 11ae1b21ece08cbd04bd7b798f0e0349ee14a61b RED
+CurrentObjectiveContributionItem.java 79142f513151e349604304ee07edfe5ac9ab13e6 RED
 UpcomingObjectiveContributionItem.java c07438463c4d359ea2f5de40ba90b5ac6991ba9c RED

org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/CurrentObjectiveContributionItem.java

@@ -251,8 +251,8 @@ class CurrentObjectiveContributionItem extends ContributionItem
 						configNames.toArray(configNamesArray);
 						currentObjectiveCombo.setItems(configNamesArray);
 
-						String currObjName =
-								currentDevelopmentProcess.getCurrentObjective().getName();
+						String currObjName = currentDevelopmentProcess != null
+								? currentDevelopmentProcess.getCurrentObjective().getName() : null;
 						currentObjectiveCombo.setText(currObjName);
 						updateObjectiveByName(currObjName);
 					}