From Eric Sokolowsky, warning fixes for g++ 4.0 under Fedora Core 4.

src/osg/LOD.cpp

@@ -104,7 +104,7 @@ bool LOD::addChild( Node *child )
         if (_children.size()>_rangeList.size()) 
         {
             float maxRange = !_rangeList.empty()?
-                 maxRange=_rangeList.back().second : 0.0f;
+                 _rangeList.back().second : 0.0f;
 
             _rangeList.resize(_children.size(),MinMaxPair(maxRange,maxRange));
         }