fix(risklevel): delete user defined environments may cause NPE due to the detect rule could be null #4191
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What type of PR is this?
type-bug
What this PR does / why we need it:
The
RiskDetectRule.rootNodecould be null, but the caller side does not consider it, which may cause NPE.Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Additional documentation e.g., usage docs, etc.: