fixed white spaces

modules/viz/doc/widget.rst

@@ -1018,4 +1018,3 @@ Constructs a WMesh.
     :param polygons: Points of the mesh object.
     :param colors: Point colors.
     :param normals: Point normals.
-	

modules/viz/src/vizcore.cpp

@@ -310,7 +310,3 @@ void cv::viz::computeNormals(const Mesh& mesh, OutputArray _normals)
     else
         _normals.release();
 }
-
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modules/viz/src/vtk/vtkImageMatSource.h

@@ -80,5 +80,3 @@ namespace cv
 
 
 #endif
-
-