build: fix compile warning

Change-Id: Ic698231c25a47d27c15d0c43b6fd777086f991b6
diff --git a/src/invitation-dialog.cpp b/src/invitation-dialog.cpp
index a847b93..38665a8 100644
--- a/src/invitation-dialog.cpp
+++ b/src/invitation-dialog.cpp
@@ -65,5 +65,5 @@
 
 #if WAF
 #include "invitation-dialog.moc"
-#include "invitation-dialog.cpp.moc"
+// #include "invitation-dialog.cpp.moc"
 #endif