[Bf-blender-cvs] [e63c773] master: Correct check when no path can be found

[Campbell Barton]

Commit: e63c773b7c7cc3cd4db1ee986942818f2a675c3e
Author: Campbell Barton
Date:   Fri Jan 8 06:09:54 2016 +1100
Branches: master
https://developer.blender.org/rBe63c773b7c7cc3cd4db1ee986942818f2a675c3e

Correct check when no path can be found

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M	release/scripts/startup/bl_operators/bmesh/find_adjacent.py

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diff --git a/release/scripts/startup/bl_operators/bmesh/find_adjacent.py b/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
index bfe44ee..ad73849 100644
--- a/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
+++ b/release/scripts/startup/bl_operators/bmesh/find_adjacent.py
@@ -179,17 +179,22 @@ def elems_depth_measure(ele_dst, ele_src, other_edges_over_cb):
         stack_new[:] = []
         depth += 1
 
-    return [vert_depths[v] for v in ele_dst_verts]
+    if not all_dst:
+        return [vert_depths[v] for v in ele_dst_verts]
+    else:
+        return None
 
 
 def find_next(ele_dst, ele_src):
     depth_src_a = elems_depth_measure(ele_dst, ele_src, other_edges_over_edge)
     depth_src_b = elems_depth_measure(ele_dst, ele_src, other_edges_over_face)
-    depth_src = tuple(zip(depth_src_a, depth_src_b))
 
-    if depth_src is None:
+    # path not found
+    if depth_src_a is None or depth_src_b is None:
         return []
 
+    depth_src = tuple(zip(depth_src_a, depth_src_b))
+
     candidates = elems_depth_search(ele_dst, depth_src_a, other_edges_over_edge)
     candidates = elems_depth_search(ele_dst, depth_src_b, other_edges_over_face, candidates)
     candidates.discard(ele_src)