Coverity analysis defect 121642: Parse warning

Parse warning

A parse warning may reduce maintainability of the code, or it may indicate a serious error. A parse warning from the Coverity parser may indicate a bug, or poor coding practice
/src/mongo/db/s/config/sharding_catalog_manager_collection_operations.cpp:619: PW.PARAMETER_HIDDEN 121642 declaration hides parameter "opCtx" (declared at line 553)