Fix a compil warning.

Fix also an incorrect comment.

3d-viewer/3d_canvas/board_adapter.h

@@ -351,7 +351,7 @@ private:
     void createPadWithMargin( const PAD *aPad, CONTAINER_2D_BASE* aDstContainer,
                               PCB_LAYER_ID aLayer, const VECTOR2I& aMargin ) const;
 
-    OBJECT_2D* createPadWithHole( const PAD* aPad, CONTAINER_2D_BASE* aDstContainer,
+    void createPadWithHole( const PAD* aPad, CONTAINER_2D_BASE* aDstContainer,
                                    int aInflateValue );
 
     void addPads( const FOOTPRINT* aFootprint, CONTAINER_2D_BASE* aDstContainer,

3d-viewer/3d_canvas/create_3Dgraphic_brd_items.cpp

@@ -467,13 +467,13 @@ void BOARD_ADAPTER::createPadWithMargin( const PAD* aPad, CONTAINER_2D_BASE* aCo
 }
 
 
-OBJECT_2D* BOARD_ADAPTER::createPadWithHole( const PAD* aPad, CONTAINER_2D_BASE* aDstContainer,
+void BOARD_ADAPTER::createPadWithHole( const PAD* aPad, CONTAINER_2D_BASE* aDstContainer,
                                              int aInflateValue )
 {
     if( !aPad->HasHole() )
     {
         wxLogTrace( m_logTrace, wxT( "BOARD_ADAPTER::createPadWithHole - found an invalid pad" ) );
-        return nullptr;
+        return;
     }
 
     std::shared_ptr<SHAPE_SEGMENT> slot = aPad->GetEffectiveHoleShape();

pcbnew/pcb_track.cpp

@@ -1177,7 +1177,7 @@ bool PCB_ARC::IsDegenerated( int aThreshold ) const
     // cannot be safely computed if the distance between mid and end points
     // is too small (a few internal units)
 
-    // len of both segments must be >= aThreshold to be not Degenerated arc
+    // len of both segments must be < aThreshold to be a very small degenerated arc
     return ( GetMid() - GetStart() ).EuclideanNorm() < aThreshold
             && ( GetMid() - GetEnd() ).EuclideanNorm() < aThreshold;
 }