[ekiga] Account: Added missing forward declaration.

[Damien Sandras <dsandras src gnome org>]

commit 62db5becc0dd48ebfdba7ddec921827e640129a7
Author: Damien Sandras <dsandras seconix com>
Date:   Sat Jun 20 13:29:40 2015 +0200

    Account: Added missing forward declaration.

 lib/engine/account/bank.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/lib/engine/account/bank.h b/lib/engine/account/bank.h
index e3c378a..5b50d39 100644
--- a/lib/engine/account/bank.h
+++ b/lib/engine/account/bank.h
@@ -48,7 +48,9 @@ namespace Ekiga
    * @{
    */
 
+  class Bank;
   typedef boost::shared_ptr<Bank> BankPtr;
+
   class Bank: public virtual Actor
   {
   public: