Issue#10: add some const qualifiers so test1 compiles again.
diff --git a/test1.c b/test1.c
index 2a4daf0..1ca4db9 100644
--- a/test1.c
+++ b/test1.c
@@ -8,7 +8,7 @@
 
 static int sort_fn (const void *j1, const void *j2)
 {
-  json_object **jso1, **jso2;
+  json_object * const *jso1, * const *jso2;
   int i1, i2;
 
   jso1 = j1;