Fixed build in debugging mode

src/common.c

@@ -1,5 +1,5 @@
 /* $Id$ */
-/* Copyright (c) 2012 Pierre Pronchery <khorben@defora.org> */
+/* Copyright (c) 2012-2013 Pierre Pronchery <khorben@defora.org> */
 /* This file is part of DeforaOS System libApp */
 /* This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,6 +17,10 @@
 
 #include <sys/socket.h>
 #include <sys/types.h>
+#ifdef DEBUG
+# include <stdio.h>
+# include <string.h>
+#endif
 #include <errno.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>