CComponentsPicture: fix build

Build can be broken with other build environments

src/gui/components/cc_item_picture.cpp

@@ -31,6 +31,7 @@
 #include <global.h>
 #include <neutrino.h>
 #include "cc.h"
+#include <unistd.h>
 
 extern CPictureViewer * g_PicViewer;