This is a follow-up for 945a8210c770801c8492eda03b6e9af3ec5d03a3 and makes the st_dev check generic, so that we can reuse it some other places. It also incorporates the non-NULL check now, to be a comprehensive one-stop solution. The helper is static inline so that compilers can optimize the redundant checks away in case it is combined with other checks.
System and Service Manager
Details
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