Path: fix potential crash bug.

src/Mod/Path/PathScripts/PathContour.py

@@ -262,6 +262,9 @@ class ObjectContour:
                 FreeCAD.Console.PrintError(e)
                 FreeCAD.Console.PrintError("Something unexpected happened. Unable to generate a contour path. Check project and tool config.")
 
+        # Let's finish by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         path = Path.Path(commandlist)
         obj.Path = path
         obj.ViewObject.Visibility = True

src/Mod/Path/PathScripts/PathMillFace.py

@@ -287,6 +287,9 @@ class ObjectFace:
             planeshape = baseobject.Shape
             PathLog.info("Working on a shape {}".format(baseobject.Name))
 
+        # Let's start by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         # if user wants the boundbox, calculate that
         PathLog.info("Boundary Shape: {}".format(obj.BoundaryShape))
         bb = planeshape.BoundBox
@@ -302,6 +305,9 @@ class ObjectFace:
             FreeCAD.Console.PrintError(e)
             FreeCAD.Console.PrintError(translate("Path_MillFace", "The selected settings did not produce a valid path.\n"))
 
+        # Let's finish by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         path = Path.Path(commandlist)
         obj.Path = path
         obj.ViewObject.Visibility = True

src/Mod/Path/PathScripts/PathPocket.py

@@ -280,6 +280,9 @@ class ObjectPocket:
                 FreeCAD.Console.PrintError(e)
                 FreeCAD.Console.PrintError("Something unexpected happened. Unable to generate a pocket path. Check project and tool config.")
 
+        # Let's finish by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         path = Path.Path(commandlist)
         obj.Path = path
         obj.ViewObject.Visibility = True

src/Mod/Path/PathScripts/PathProfile.py

@@ -169,7 +169,7 @@ class ObjectProfile:
 
         profile.setParams(**profileparams)
         obj.AreaParams = str(profile.getParams())
-        
+
         # PathLog.debug("About to profile with params: {}".format(profileparams))
         PathLog.debug("About to profile with params: {}".format(profile.getParams()))
 
@@ -316,6 +316,9 @@ class ObjectProfile:
                                     FreeCAD.Console.PrintError(e)
                                     FreeCAD.Console.PrintError("Something unexpected happened. Unable to generate a contour path. Check project and tool config.")
 
+        # Let's finish by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         path = Path.Path(commandlist)
         obj.Path = path
         obj.ViewObject.Visibility = True

src/Mod/Path/PathScripts/PathProfileEdges.py

@@ -285,6 +285,9 @@ class ObjectProfile:
                     FreeCAD.Console.PrintError(e)
                     FreeCAD.Console.PrintError("Something unexpected happened. Unable to generate a contour path. Check project and tool config.")
 
+        # Let's finish by rapid to clearance...just for safety
+        commandlist.append(Path.Command("G0", {"Z": obj.ClearanceHeight.Value}))
+
         path = Path.Path(commandlist)
         obj.Path = path
         obj.ViewObject.Visibility = True

src/Mod/Path/PathTests/test_linuxcnc_00.ngc

@@ -64,6 +64,7 @@ G1 X10.00 Y0.00 Z0.00
 G1 X0.00 Y0.00 Z0.00
 G1 X0.00 Y10.00 Z0.00
 G1 X10.00 Y10.00 Z0.00
+G0 Z15.00
 M05
 G00 X-1.0 Y1.0
 G17 G90