Added null checks for fieldInfo in ExactSearcher to avoid NPE while running exact search for segments with no vector field #13423

	name: "Changelog Verifier"
	on:
	pull_request:
	types: [opened, edited, review_requested, synchronize, reopened, ready_for_review, labeled, unlabeled]

	jobs:
	# Enforces the update of a changelog file on every pull request
	verify-changelog:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	ref: ${{ github.event.pull_request.head.sha }}

	- uses: dangoslen/changelog-enforcer@v3
	with:
	skipLabels: "autocut, skip-changelog"

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