CSocket: Also call on_connected for local socket connections

Author: https://github.com/rburchell
Commit: https://github.com/SerenityOS/serenity/commit/e922db68d8e
Pull-request: https://github.com/SerenityOS/serenity/pull/314
Reviewed-by: https://github.com/awesomekling ✅

Libraries/LibCore/CSocket.cpp

@@ -92,6 +92,8 @@ bool CSocket::connect(const CSocketAddress& address)
     }
 
     m_connected = true;
+    if (on_connected)
+        on_connected();
     return true;
 }