BUG: sampledSurfaces: cleared out volPointInterpolation & pointMesh.

src/sampling/sampledSurface/sampledSurfaces/sampledSurfaces.C

@@ -277,6 +277,8 @@ void Foam::sampledSurfaces::read(const dictionary& dict)
 void Foam::sampledSurfaces::updateMesh(const mapPolyMesh&)
 {
     expire();
+
+    // pointMesh and interpolation will have been reset in mesh.update
 }
 
 
@@ -327,10 +329,6 @@ bool Foam::sampledSurfaces::expire()
         }
     }
 
-    // reset interpolation
-    pointMesh::Delete(mesh_);
-    volPointInterpolation::Delete(mesh_);
-
     // true if any surfaces just expired
     return justExpired;
 }