+ fix some warnings

src/Mod/Sketcher/App/Constraint.cpp

@@ -131,19 +131,20 @@ void Constraint::Restore(XMLReader &reader)
         AlignmentType = (InternalAlignmentType) reader.getAttributeAsInteger("InternalAlignmentType");
     else
         AlignmentType = Undef;
-    
+
     // read the third geo group if present
     if (reader.hasAttribute("Third")) {
         Third    = reader.getAttributeAsInteger("Third");
         ThirdPos = (PointPos)  reader.getAttributeAsInteger("ThirdPos");
     }
+
     // Read the distance a constraint label has been moved
     if (reader.hasAttribute("LabelDistance"))
         LabelDistance = (float)reader.getAttributeAsFloat("LabelDistance");
 
     if (reader.hasAttribute("LabelPosition"))
         LabelPosition = (float)reader.getAttributeAsFloat("LabelPosition");
-   
+
     if (reader.hasAttribute("IsDriving"))
-        isDriving = (bool)reader.getAttributeAsInteger("IsDriving");
+        isDriving = reader.getAttributeAsInteger("IsDriving") ? true : false;
 }

src/Mod/Sketcher/Gui/CommandConstraints.cpp

@@ -3476,7 +3476,7 @@ void CmdSketcherToggleDrivingConstraint::activated(int iMsg)
                     // issue the actual commands to toggle
                     doCommand(Doc,"App.ActiveDocument.%s.toggleDriving(%d) ",selection[0].getFeatName(),ConstrId);
                 }
-                catch(const Base::Exception& e) {
+                catch(const Base::Exception&) {
                     succesful--;
                 }
             }