Update nf-fltkernel-fltcreatefileex.md

[Cloud-Writer]

This is a request via Content Idea request 99478 to add this note from FltQueryInformationFile to this function as well.

[rodwiddowson]

It’s better to say “do not call with a non null top level IRP”. If you are calling IoGetTopLevelIrp except in an assert you probably have an architectural issue

[Cloud-Writer]

It’s better to say “do not call with a non null top level IRP”. If you are calling IoGetTopLevelIrp except in an assert you probably have an architectural issue

@rodwiddowson, I checked with the engineer who asked for the update, and he is fine with using the verbiage you proposed. He would like this text to be updated for the FltQueryInformationFile function as well because that is where he took the text from.

[lorihollasch]

@Cloud-Writer , I was able to get this update made in a private repo along with some other work I was doing, so am just going to close out your PR here. Thanks for flagging this, and thanks to @rodwiddowson for language finesse around top level IRQL.