fix(addressbook): close DB connection after DAV query

SoObjects/Contacts/SOGoContactSourceFolder.m

@@ -1,6 +1,6 @@
 /* SOGoContactSourceFolder.m - this file is part of SOGo
  *
- * Copyright (C) 2006-2021 Inverse inc.
+ * Copyright (C) 2006-2022 Inverse inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -700,6 +700,7 @@
   RELEASE(pool);
   [response appendContentString: buffer];
   RELEASE(buffer);
+  [source releaseConnection: connection];
 //   NSLog (@"/adding properties with url");
 
   NSZoneFree (NULL, propertiesArray);

SoObjects/SOGo/LDAPSource.m

@@ -1,6 +1,6 @@
 /* LDAPSource.m - this file is part of SOGo
  *
- * Copyright (C) 2007-2021 Inverse inc.
+ * Copyright (C) 2007-2022 Inverse inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -497,6 +497,12 @@ groupObjectClasses: (NSArray *) newGroupObjectClasses
   return (NGLdapConnection *)[self connection];
 }
 
+- (void) releaseConnection: (id) connection
+{
+  if ([(NGLdapConnection *)connection isBound])
+    [(NGLdapConnection *)connection unbind];
+}
+
 - (NSString *) domain
 {
   return _domain;

SoObjects/SOGo/SOGoSource.h

@@ -1,6 +1,6 @@
 /* SOGoSource.h - this file is part of SOGo
  *
- * Copyright (C) 2009-2021 Inverse inc.
+ * Copyright (C) 2009-2022 Inverse inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -40,6 +40,7 @@
 - (NSArray *) searchFields;
 
 - (id) connection;
+- (void) releaseConnection: (id) connection;
 
 /* requires a "." to obtain the full list of contacts */
 - (void) setListRequiresDot: (BOOL) aBool;

SoObjects/SOGo/SQLSource.m

@@ -440,6 +440,17 @@
   return channel;
 }
 
+- (void) releaseConnection: (id) connection
+{
+  GCSChannelManager *cm;
+
+  if (connection)
+    {
+      cm = [GCSChannelManager defaultChannelManager];
+      [cm releaseChannel: connection];
+    }
+}
+
 - (NSDictionary *) _lookupContactEntry: (NSString *) theID
                          considerEmail: (BOOL) b
                               inDomain: (NSString *) domain
@@ -678,18 +689,16 @@
                               inDomain: (NSString *) domain
 {
   EOAdaptorChannel *channel;
-  GCSChannelManager *cm;
   NSDictionary *response;
 
-  cm = [GCSChannelManager defaultChannelManager];
   channel = (EOAdaptorChannel *)[self connection];
 
   response = [self _lookupContactEntry: theID
 			 considerEmail: b
 			      inDomain: domain
 		       usingConnection: channel];
-  if (channel)
-    [cm releaseChannel: channel];
+
+  [self releaseConnection: channel];
 
   return response;
 }