From Michael Platings, "I was getting a 0 byte memory leak reported when loading 3ds files, so

I've changed line 196 from:

viewport->layout.viewL=(Lib3dsView*)calloc(sizeof(Lib3dsView),views);

to:

viewport->layout.viewL= views ?
(Lib3dsView*)calloc(sizeof(Lib3dsView),views) : 0;"

src/osgPlugins/lib3ds/viewport.cpp

@@ -193,7 +193,7 @@ lib3ds_viewport_set_views(Lib3dsViewport *viewport, Lib3dsDword views)
   }
   else {
     viewport->layout.views=views;
-    viewport->layout.viewL=(Lib3dsView*)calloc(sizeof(Lib3dsView),views);
+    viewport->layout.viewL= views ? (Lib3dsView*)calloc(sizeof(Lib3dsView),views) : 0;
   }
 }