beremiz

Fix problem introduced in 9c5f835b031e : Exception in LDPowerRailDialog.py because of change in OnPaint/RefreshView/DrawPreview.

2019-03-28, Edouard Tisserant
9622418ac28c
Fix problem introduced in 9c5f835b031e : Exception in LDPowerRailDialog.py because of change in OnPaint/RefreshView/DrawPreview.
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