Workaround some warnings

tests/test-mrbtree.c

@@ -83,6 +83,7 @@ static void test_uint(void)
     }
   assert (k == 5);
   rbtree_uint_it_t it, it2;
+  rbtree_uint_it(it2, tree);
   for (rbtree_uint_it_last(it, tree) ; !rbtree_uint_end_p(it) ; rbtree_uint_previous(it)) {
     k--;
     rbtree_uint_it_set(it2, it);

tests/test-mserial-json.c

@@ -153,7 +153,9 @@ static void test_out_fill(void)
   static const char expected2[] = "{ \"activated\":false,\"data\":{ \"vala\":1742,\"valb\":-2.300000,\"valc\":true,\"vald\":\"This is a test\",\"vale\":[1,2,3],\"valf\":{\"is_bool\":true},\"valg\":[1,2,3,4,5,6],\"valh\":{\"jane\":3,\"steeve\":-4},\"vali\":3}}";
   char get[sizeof expected];
   fgets (get, sizeof expected , f);
-  assert (strcmp(get, expected) == 0 || strcmp(get, expected2) == 0);
+  // Workaround  string literal of length 4350 exceeds maximum length 4095
+  if (!(strcmp(get, expected) == 0 || strcmp(get, expected2) == 0))
+    assert (0);
   fclose(f);
   
   f = m_core_fopen ("a-mjson.dat", "rt");