qlit: use QType instead of int

Suggested-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-Id: <20180305172951.2150-3-marcandre.lureau@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

include/qapi/qmp/qlit.h

@@ -20,7 +20,7 @@ typedef struct QLitDictEntry QLitDictEntry;
 typedef struct QLitObject QLitObject;
 
 struct QLitObject {
-    int type;
+    QType type;
     union {
         bool qbool;
         int64_t qnum;