From David Callu, warning fixes and removal of spaces at end of lines.

src/osgVolume/FixedFunctionTechnique.cpp

@@ -247,7 +247,7 @@ void FixedFunctionTechnique::init()
     _node = texgenNode_0;
 }
 
-void FixedFunctionTechnique::update(osgUtil::UpdateVisitor* uv)
+void FixedFunctionTechnique::update(osgUtil::UpdateVisitor* /*uv*/)
 {
 //    OSG_NOTICE<<"FixedFunctionTechnique:update(osgUtil::UpdateVisitor* nv):"<<std::endl;
 }

src/osgVolume/Layer.cpp

@@ -28,6 +28,7 @@ ImageDetails::ImageDetails():
 }
 
 ImageDetails::ImageDetails(const ImageDetails& rhs,const osg::CopyOp& copyop):
+    osg::Object(rhs, copyop),
     _texelOffset(rhs._texelOffset),
     _texelScale(rhs._texelScale),
     _matrix(rhs._matrix)
@@ -511,7 +512,7 @@ struct ApplyTransferFunctionOperator
         luminance(a);
     }
 
-    inline void luminance_alpha(float l,float a) const
+    inline void luminance_alpha(float l,float /*a*/) const
     {
         luminance(l);
     }
@@ -521,7 +522,7 @@ struct ApplyTransferFunctionOperator
         luminance((r+g+b)*0.3333333);
     }
 
-    inline void rgba(float r,float g,float b,float a) const
+    inline void rgba(float /*r*/,float /*g*/,float /*b*/,float a) const
     {
         luminance(a);
     }

src/osgVolume/Locator.cpp

@@ -43,7 +43,7 @@ bool Locator::convertModelToLocal(const osg::Vec3d& world, osg::Vec3d& local) co
     return true;
 }
 
-bool Locator::computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const
+bool Locator::computeLocalBounds(Locator& /*source*/, osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const
 {
     typedef std::list<osg::Vec3d> Corners;
     Corners corners;

src/osgVolume/RayTracedTechnique.cpp

@@ -532,7 +532,7 @@ void RayTracedTechnique::init()
     }
 }
 
-void RayTracedTechnique::update(osgUtil::UpdateVisitor* uv)
+void RayTracedTechnique::update(osgUtil::UpdateVisitor* /*uv*/)
 {
 //    OSG_NOTICE<<"RayTracedTechnique:update(osgUtil::UpdateVisitor* nv):"<<std::endl;
 }