compiler warnings: unused variables

Can we do anything about compiler warnings of unused variables?

1. applications/solvers/DNS/dnsFoam

• readTurbulenceProperties.H:28:18: warning: unused variable 'recRootN'

2. applications/solvers/combustion/fireFoam

• createFields.H:117:6: warning: unused variable 'solvePrimaryRegion'
• createFields.H:122:6: warning: unused variable 'solvePyrolysisRegion'

3. src/finiteVolume/cfdTools/general/include/alphaControls.H:24:8:

• warning: unused variable 'scAlpha'

4. applications/solvers/incompressible/simpleFoam/overSimpleFoam

• createOversetFields.H:27:6: warning: unused variable 'adjustFringe'
• createOversetFields.H:31:6: warning: unused variable 'massFluxInterpolation'

5. applications/solvers/incompressible/simpleFoam/porousSimpleFoam

• createPorousZones.H:2:10: warning: variable 'pressureImplicitPorosity' set but not used

6. applications/solvers/lagrangian/reactingParcelFoam

• createFields.H:106:6: warning: unused variable 'solvePrimaryRegion'

@andy @Mattijs @mark @Sergio

Thanks - will fix

mentioned in commit 2b27feb1

Warnings resolved by commit 2b27feb1 - need to re-run tests as a sanity check

closed