Delete plugin folders of jar files that no longer exist.

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@8772 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/openfire/container/PluginManager.java

@@ -524,10 +524,7 @@ public class PluginManager {
         Log.debug("Unloading plugin " + pluginName);
 
         Plugin plugin = plugins.get(pluginName);
-        if (plugin == null) {
-            return;
-        }
-
+        if (plugin != null) {
             // Remove from dev mode if it exists.
             pluginDevelopment.remove(plugin);
 
@@ -563,6 +560,8 @@ public class PluginManager {
             catch (Exception e) {
                 Log.error(e);
             }
+        }
+
         // Try to remove the folder where the plugin was exploded. If this works then
         // the plugin was successfully removed. Otherwise, some objects created by the
         // plugin are still in memory.
@@ -584,7 +583,7 @@ public class PluginManager {
             Log.error(e);
         }
 
-        if (!dir.exists()) {
+        if (plugin != null && !dir.exists()) {
             plugins.remove(pluginName);
             pluginDirs.remove(plugin);
             classloaders.remove(plugin);