BUG: timeVaryingMappedFixedValue : find furthest away point

src/finiteVolume/fields/fvPatchFields/derived/timeVaryingMappedFixedValue/timeVaryingMappedFixedValueFvPatchField.C

@@ -261,17 +261,16 @@ void timeVaryingMappedFixedValueFvPatchField<Type>::readSamplePoints()
 
     for (label i = 1; i < samplePoints.size(); i++)
     {
-        e1 = samplePoints[i] - p0;
-        scalar magE1 = mag(e1);
+        const vector d = samplePoints[i] - p0;
+        scalar magD = mag(d);
 
-        if (magE1 > maxDist)
+        if (magD > maxDist)
         {
-            e1 /= magE1;
+            e1 = d/magD;
             index1 = i;
-            maxDist = magE1;
+            maxDist = magD;
         }
     }
-    e1 = samplePoints[index1] - p0;
     // Find point that is furthest away from line p0-p1
     const point& p1 = samplePoints[index1];