Fix the bug: 'Upsample' object has no attribute 'weight'

[boyden]

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Motivation

The upsample_cfg in the object FCNMaskHead supports bilinear, however, in the mmdetection/mmdet/models/roi_heads/mask_heads/fcn_mask_head.py L124, torch.nn.Upsample has no weight attribute. The goal of this PR is to fix this bug.

Modification

L122else: --> elif hasattr(m, 'weight') and hasattr(m, 'bias'):

BC-breaking (Optional)

No backward-compatibility was changed.

Use cases (Optional)

No new feature was introduced.

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects, like MMDet or MMCls.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[CLAassistant]

All committers have signed the CLA.

[RangiLyu]

LGTM

[OpenMMLab-Coodinator]

Hi @boyden ！First of all, we want to express our gratitude for your significant PR in the MMDet project. Your contribution is highly appreciated, and we are grateful for your efforts in helping improve this open-source project during your personal time. We believe that many developers will benefit from your PR.

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