TrkGlobalChi2Fitter: Fix clang warnings.

Don't use std::move on a returned value.

WARNING: big files (>100K) are found in the changeset

276K in file Tracking/TrkFitter/TrkGlobalChi2Fitter/src/GlobalChi2Fitter.cxx

This merge request affects 1 package:

• Tracking/TrkFitter/TrkGlobalChi2Fitter

Adding @amorley as watcher

added Tracking master review-pending-level-1 labels

CI Result SUCCESS (hash f284141c)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 19954]

merged

mentioned in commit 01cd7237

added sweep:ignore label