BUG: Fixing zeroFaGradient. Fix #1673

src/finiteArea/fields/faPatchFields/basic/zeroGradient/zeroGradientFaPatchField.C

@@ -111,10 +111,7 @@ Foam::zeroGradientFaPatchField<Type>::valueInternalCoeffs
     const tmp<scalarField>&
 ) const
 {
-    return tmp<Field<Type>>
-    (
-        new Field<Type>(this->size(), Zero)
-    );
+    return tmp<Field<Type>>::New(this->size(), pTraits<Type>::one);
 }