ENH: encapsulated warning msg in dedug scope

src/lagrangian/intermediate/parcels/Templates/KinematicParcel/KinematicParcel.C

@@ -42,16 +42,19 @@ void Foam::KinematicParcel<ParcelType>::setCellValues
 
     if (rhoc_ < td.cloud().constProps().rhoMin())
     {
-        WarningIn
-        (
-            "void Foam::KinematicParcel<ParcelType>::setCellValues"
-            "("
-                "TrackData&, "
-                "const scalar, "
-                "const label"
-            ")"
-        )   << "Limiting observed density in cell " << cellI << " to "
-            << td.cloud().constProps().rhoMin() <<  nl << endl;
+        if (debug)
+        {
+            WarningIn
+            (
+                "void Foam::KinematicParcel<ParcelType>::setCellValues"
+                "("
+                    "TrackData&, "
+                    "const scalar, "
+                    "const label"
+                ")"
+            )   << "Limiting observed density in cell " << cellI << " to "
+                << td.cloud().constProps().rhoMin() <<  nl << endl;
+        }
 
         rhoc_ = td.cloud().constProps().rhoMin();
     }