fixes overlay in navigator

refs 2553

org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/MarkerService.java

@@ -152,7 +152,11 @@ public class MarkerService implements IMarkerService, IPersistencyServiceListene
 		if(top == null) {
 			return ESeverity.lowest();
 		}
-		return getCacheEntry(top).getHighestSeverity(element);
+		ESeverity sev = getCacheEntry(top).getHighestSeverity(element);
+		if(element instanceof IConstrained) {
+			sev = ConstraintsUtils.augmentSeverityWithConstraintSeverity(sev, element);
+		}
+		return sev;
 	}
 
 	/** Accesses cache. */
@@ -261,9 +265,6 @@ public class MarkerService implements IMarkerService, IPersistencyServiceListene
 		/** Returns the highest severity for the given element. */
 		public ESeverity getHighestSeverity(EObject element) {
 			ESeverity sev = highestSeverityMap.get(element);
-			if(element instanceof IConstrained) {
-				sev = ConstraintsUtils.augmentSeverityWithConstraintSeverity(sev, element);
-			}
 			return sev == null ? ESeverity.lowest() : sev;
 		}
 
@@ -388,7 +389,6 @@ public class MarkerService implements IMarkerService, IPersistencyServiceListene
 				return getImageDescriptor("icons/info.gif");
 			case DEBUG:
 				return getImageDescriptor("icons/debug.gif");
-
 		}
 		return null;
 	}