Avoid deprecated attribute syntax for TFile

Fix the test failing log comparison due to a warning message from ROOT 6.32 about deprecated way to get a TTree from a TFile

This merge request affects 1 package:

• Control/RootUtils

This merge request affects 1 file:

• Control/RootUtils/test/TTreePatch_t.py

Adding @ssnyder as watcher

added Core analysis-review-required main review-pending-level-1 labels

enabled an automatic merge when the pipeline for 471364ba succeeds

removed review-pending-level-1 label

removed analysis-review-required label

added review-approved label

CI Result SUCCESS (hash 471364ba)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 7908] (remote access info)

merged

mentioned in commit 7d9d10f9

mentioned in commit jchapman/athena@4f00ebd9

mentioned in merge request !75831 (merged)