[TD]fix handling of perforated section faces

src/Mod/TechDraw/App/DrawViewSection.h

@@ -37,7 +37,6 @@
 
 #include "DrawViewPart.h"
 
-
 class Bnd_Box;
 class gp_Pln;
 class gp_Pnt;
@@ -48,10 +47,6 @@ class gp_Ax2;
 namespace TechDraw
 {
 class Face;
-}
-
-namespace TechDraw
-{
 class DrawProjGroupItem;
 class DrawGeomHatch;
 class PATLineSpec;
@@ -171,6 +166,8 @@ public:
 
     bool showSectionEdges(void);
 
+    TopoDS_Shape makeFaceFromWires(std::vector<TopoDS_Wire> &inWires);
+
 public Q_SLOTS:
     virtual void onSectionCutFinished(void);