reactingOneDim: Correct reporting of temperature range in parallel

Patch Contributed by Karl Meredith, FM Global.
Resolves bug-report https://bugs.openfoam.org/view.php?id=2621

src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.C

@@ -706,9 +706,9 @@ void reactingOneDim::evolveRegion()
     solidThermo_.correct();
 
     Info<< "pyrolysis min/max(T) = "
-        << min(solidThermo_.T().primitiveField())
+        << gMin(solidThermo_.T().primitiveField())
         << ", "
-        << max(solidThermo_.T().primitiveField())
+        << gMax(solidThermo_.T().primitiveField())
         << endl;
 }