Fix formatting of VTK_DELETE_FUNCTION

This commit fixes a formatting error when specifying VTK_DELETE_FUNCTION. Here,
VTK_DELETE_FUNCTION was introduced in https://gitlab.kitware.com/vtk/vtk/commit/5d8e8d52602a020cdb42661fb275b0616a1e5f45.

Author: msmolens

Rendering/VolumeOpenGL/vtkOpenGLGPUVolumeRayCastMapper.cxx

@@ -309,8 +309,8 @@ class vtkTextureTable : public vtkObject
   double LastRange[2];
 
 private:
-  vtkTextureTable(const vtkTextureTable&); VTK_DELETE_FUNCTION
-  vtkTextureTable& operator=(const vtkTextureTable&); VTK_DELETE_FUNCTION
+  vtkTextureTable(const vtkTextureTable&) VTK_DELETE_FUNCTION;
+  vtkTextureTable& operator=(const vtkTextureTable&) VTK_DELETE_FUNCTION;
 
   // Description:
   // Queries the GL_MAX_TEXTURE_SIZE and returns either the requested idealWidth
@@ -474,8 +474,8 @@ class vtkOpacityTable: public vtkTextureTable
   int LastBlendMode;
   double LastSampleDistance;
 private:
-  vtkOpacityTable(const vtkOpacityTable&); VTK_DELETE_FUNCTION
-  vtkOpacityTable& operator=(const vtkOpacityTable&); VTK_DELETE_FUNCTION
+  vtkOpacityTable(const vtkOpacityTable&) VTK_DELETE_FUNCTION;
+  vtkOpacityTable& operator=(const vtkOpacityTable&) VTK_DELETE_FUNCTION;
 };
 
 vtkStandardNewMacro(vtkOpacityTable);
@@ -510,9 +510,9 @@ class vtkOpacityTables
     return this->Tables.size();
     }
 private:
-  vtkOpacityTables(); VTK_DELETE_FUNCTION
-  vtkOpacityTables(const vtkOpacityTables &other); VTK_DELETE_FUNCTION
-  vtkOpacityTables &operator=(const vtkOpacityTables &other); VTK_DELETE_FUNCTION
+  vtkOpacityTables() VTK_DELETE_FUNCTION;
+  vtkOpacityTables(const vtkOpacityTables &other) VTK_DELETE_FUNCTION;
+  vtkOpacityTables &operator=(const vtkOpacityTables &other) VTK_DELETE_FUNCTION;
 
   std::vector<vtkOpacityTable*> Tables;
 };
@@ -595,8 +595,8 @@ class vtkRGBTable: public vtkTextureTable
   ~vtkRGBTable() {};
 
 private:
-  vtkRGBTable(const vtkRGBTable &other); VTK_DELETE_FUNCTION
-  vtkRGBTable &operator=(const vtkRGBTable &other); VTK_DELETE_FUNCTION
+  vtkRGBTable(const vtkRGBTable &other) VTK_DELETE_FUNCTION;
+  vtkRGBTable &operator=(const vtkRGBTable &other) VTK_DELETE_FUNCTION;
 };
 
 vtkStandardNewMacro(vtkRGBTable);