fix case where first edge segment is an arc

pcbnew/specctra_export.cpp

@@ -748,14 +748,11 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary ) throw( IOErr
         items.Remove( 0 );
 
         prevPt = graphic->GetEnd();
-
-        path->AppendPoint( mapPt( graphic->GetStart() ) );
         path->AppendPoint( mapPt( graphic->GetEnd() ) );
 
-        while( items.GetCount() )
-        {
-            graphic = findPoint( prevPt, &items );
-            if( graphic )
+        // do not append the other end point yet, this first edge item might be an arc
+
+        for(;;)
         {
             switch( graphic->m_Shape )
             {
@@ -831,8 +828,12 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary ) throw( IOErr
                     path->AppendPoint( nextPt );
                  }
             }
-            }
-            else
+
+            if( items.GetCount() == 0 )
+                break;
+
+            graphic = findPoint( prevPt, &items );
+            if( !graphic )
             {
                 wxString error;