Converted tabs to four spaces
From Magnus Kessler, "gcc-4.8 flagged this:

src/osgUtil/tristripper/src/tri_stripper.cpp:375:40: warning: typedef
‘tri_node_iter’ locally defined but not used [-Wunused-local-typedefs]
  typedef triangle_graph::node_iterator tri_node_iter;
                                        ^
---
 src/osgUtil/tristripper/src/tri_stripper.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/osgUtil/tristripper/src/tri_stripper.cpp
b/src/osgUtil/tristripper/src/tri_stripper.cpp
index 2f5a7f3..3396881 100644
--- a/src/osgUtil/tristripper/src/tri_stripper.cpp
+++ b/src/osgUtil/tristripper/src/tri_stripper.cpp
@@ -372,7 +372,6 @@ inline tri_stripper::const_link_iterator
tri_stripper::BackLinkToNeighbour(const

 void tri_stripper::MarkTriAsTaken(const size_t i)
 {
-       typedef triangle_graph::node_iterator tri_node_iter;
        typedef triangle_graph::out_arc_iterator tri_link_iter;

        // Mark the triangle node"