Fix potential problems with PIDNet training and inference 修复 PIDNet 训练和推理时的潜在问题

[OpenMMLab-Assistant-004]

Fix potential problems with PIDNet training and inference

修复 PIDNet 训练和推理时的潜在问题

[open-mmlab/mmsegmentation#2962](https://github.com/open-mmlab/mmsegmentation/issues/2962](https://github.com/open-mmlab/mmsegmentation/issues/2962))

[open-mmlab/mmsegmentation#2962](https://github.com/open-mmlab/mmsegmentation/issues/2962](https://github.com/open-mmlab/mmsegmentation/issues/2962))

Task Information

Repository：MMSegmentation

Difficulty：Easy

Points：20

Estimated Time Consumption：7 days

Task Status

Claimant's Github ID：None

Claim Time：None

PR Link：None

Points to Note

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