[Bf-blender-cvs] [95a1cc2] master: Fix crash extruding an empty curve

[Campbell Barton]

Commit: 95a1cc20dcfaa3d8c16bd0e6481e65c825f3d982
Author: Campbell Barton
Date:   Tue Mar 10 18:22:08 2015 +1100
Branches: master
https://developer.blender.org/rB95a1cc20dcfaa3d8c16bd0e6481e65c825f3d982

Fix crash extruding an empty curve

===================================================================

M	source/blender/editors/curve/editcurve.c

===================================================================

diff --git a/source/blender/editors/curve/editcurve.c b/source/blender/editors/curve/editcurve.c
index a4c071d..936a40b 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -4901,6 +4901,10 @@ static bool ed_editcurve_extrude(Curve *cu, EditNurb *editnurb)
 		void      *p;
 	} cu_actvert;
 
+	if (BLI_listbase_is_empty(&editnurb->nurbs)) {
+		return changed;
+	}
+
 	BKE_curve_nurb_vert_active_get(cu, &cu_actnu, &cu_actvert.p);
 	BKE_curve_nurb_vert_active_set(cu, NULL, NULL);