Update to use const char * for sexp_iterator_assoc.

ChangeLog

@@ -14,6 +14,9 @@
 
 	* testsuite/md5-compat-test.c (test_main): Use US macro.
 
+	* testsuite/sexp-test.c (test_main): Use const char * for assoc
+	keys. Overlooked in 2016-08-16 change.
+
 2016-08-29  Niels Möller  <nisse@lysator.liu.se>
 
 	* sexp-format.c (strlen_u8): New helper function.

testsuite/sexp-test.c

@@ -70,7 +70,7 @@ test_main(void)
 
   }
   {
-    static const uint8_t *keys[2] = { "n", "e" };
+    static const char * const keys[2] = { "n", "e" };
     struct sexp_iterator v[2];
     
     ASSERT(sexp_iterator_first(&i, LDATA("((1:n2:xx3:foo)0:(1:y)(1:e))")));