Coverity found a Quality issue: Division or modulo by float zero

Details:

Coverity Issue ID: 184959
Issue Description: An expression which may be zero is used as a divisor in floating-point arithmetic.
Potential Impact: This could cause an immediate crash or incorrect computation.
Coverity checker: DIVIDE_BY_ZERO
Branch: master
File path: /src/mongo/db/admission/ingress_request_rate_limiter.cpp
Line number: Unknown

What Coverity Detected (Main Finding)

In function call "updateRateParameters", division by expression "rate" which may be zero results in either +infinity, -infinity, or NaN.

The issue can be viewed in Coverity here.

How do I fix this?

Refer to https://wiki.corp.mongodb.com/spaces/HGTC/pages/385852267/Guidance+on+fixing+Coverity+issues for guidance on fixing Coverity issues.