[PAXCDI-189] Exception on stopping service component

Author: hwellmann

pax-cdi-extension/src/main/java/org/ops4j/pax/cdi/extension/impl/component/ComponentDescriptor.java

@@ -167,10 +167,12 @@ protected void onStart() {
 
     @Override
     protected void onStop() {
-        listener.onComponentUnsatisfied(this);
-        for (ComponentDependency<S, ?> dependency : dependencies) {
-            dependency.stop();
+        if (isSatisfied()) {
+            listener.onComponentUnsatisfied(this);
+            for (ComponentDependency<S, ?> dependency : dependencies) {
+                dependency.stop();
+            }
+            serviceRegistration.unregister();
         }
-        serviceRegistration.unregister();
     }
 }