Pcbnew: fix Bug #1422093 (pcbnew crashes after editing a footprint cominng from the board with the fp editor and saving it on a librray and trying to load it to the board)

Some other very minor fixes.

pcbnew/class_module.cpp

@@ -112,8 +112,6 @@ MODULE::MODULE( const MODULE& aModule ) :
     m_Value->SetParent( this );
 
     // Copy auxiliary data: Pads
-    // m_Pads.DeleteAll();
-
     for( D_PAD* pad = aModule.m_Pads;  pad;  pad = pad->Next() )
     {
         D_PAD* newpad = new D_PAD( *pad );