[processing] correctly use TYPE_VECTOR constants from corresponding module

Author: volaya

python/plugins/processing/algs/saga/SagaAlgorithm.py

@@ -197,10 +197,10 @@ def processAlgorithm(self, progress):
                             if exportCommand is not None:
                                 commands.append(exportCommand)
                         param.value = ";".join(layers)
-                elif param.datatype in [dataobjects.TYPE_VECTOR_ANY,
-                                        dataobjects.TYPE_VECTOR_LINE,
-                                        dataobjects.TYPE_VECTOR_POLYGON,
-                                        dataobjects.TYPE_VECTOR_POINT]:
+                elif param.datatype in [ParameterMultipleInput.TYPE_VECTOR_ANY,
+                                        ParameterMultipleInput.TYPE_VECTOR_LINE,
+                                        ParameterMultipleInput.TYPE_VECTOR_POLYGON,
+                                        ParameterMultipleInput.TYPE_VECTOR_POINT]:
                     for layerfile in layers:
                         layer = dataobjects.getObjectFromUri(layerfile, False)
                         if layer: