bug fix: 修复contrib中的det模型后处理在遇到没有检测框的图时导致同batch中接下来的图片结果全部为空的bug #1718

	name: Build
	on: [pull_request]

	jobs:
	macOS-latest-py:
	runs-on: macos-latest

	steps:
	- name: Clone
	uses: actions/checkout@v1

	- name: Get CMake
	uses: lukka/get-cmake@latest

	- name: Get Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'

	- name: Build FastDeploy
	working-directory: ./python
	run: \|
	export ENABLE_ORT_BACKEND=ON
	export ENABLE_PADDLE_BACKEND=OFF
	export ENABLE_OPENVINO_BACKEND=OFF
	export ENABLE_VISION=ON
	export ENABLE_TEXT=ON
	python -m pip install wheel
	python setup.py build
	python setup.py bdist_wheel
	ls -l

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