faceReflecting radiationModel accesses unitialised data (valgrind)

Summary

faceReflecting radiationModel accesses uninitialised value.

Steps to reproduce

Set up any case with faceReflecting.

Example case

tutorials/heatTransfer/buoyantSimpleFoam/simpleCarSolarPanel

and run

valgrind buoyantSimpleFoam

What is the current bug behaviour?

Tests uninitialised variable. The actual value will not get used though because of additional protection so the simulation proceeds correctly.

Environment information

• OpenFOAM version : v2206

Possible fixes

Initialise data to any value:

    labelList refDirIndex(triangleIndex.size(), -1);
    labelList refIndex(triangleIndex.size(), -1);