Include qemu/queue.h slightly less

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190812052359.30071-20-armbru@redhat.com>
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 8367cb1..8b41a03 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -20,6 +20,7 @@
 #include "qemu/osdep.h"
 #include "qemu/cutils.h"
 #include "qemu/path.h"
+#include "qemu/queue.h"
 #include <elf.h>
 #include <endian.h>
 #include <grp.h>