message: Modify test to eliminate gnu 7.1 compiler warning.
diff: @@ -278,8 +278,9 @@ TEST( quest_octree, octree_block_is_descendant)
  EXPECT_TRUE(grandchild.isDescendantOf( child3));
  EXPECT_TRUE(grandchild.isDescendantOf( rootBlock));
  - if(i != 3)
  + if (i != 3) {
  EXPECT_FALSE( grandchild.isDescendantOf( rootBlock.child(i)));
  + }
  EXPECT_FALSE( grandchild.isDescendantOf( BlockIndex::invalid_index() ));
  EXPECT_FALSE( BlockIndex::invalid_index().isDescendantOf( grandchild ));
  