wxGUI/animation: fix https://trac.osgeo.org/grass/ticket/3752

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@74094 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/animation/utils.py

@@ -341,7 +341,7 @@ def layerListToCmdsMatrix(layerList):
         else:
             cmdsForComposition.append([layer.cmd] * count)
 
-    return zip(*cmdsForComposition)
+    return list(zip(*cmdsForComposition))
 
 
 def sampleCmdMatrixAndCreateNames(cmdMatrix, sampledSeries, regions):