[Bf-blender-cvs] [7ae9b96ac6d] blender-v2.79a-release: Fix T54072: Crash splitting edges

[Campbell Barton]

Commit: 7ae9b96ac6debe9c63c4ce9ac9ca4e659d3a620d
Author: Campbell Barton
Date:   Thu Feb 15 10:48:12 2018 +1100
Branches: blender-v2.79a-release
https://developer.blender.org/rB7ae9b96ac6debe9c63c4ce9ac9ca4e659d3a620d

Fix T54072: Crash splitting edges

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

M	source/blender/bmesh/intern/bmesh_core.c

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

diff --git a/source/blender/bmesh/intern/bmesh_core.c b/source/blender/bmesh/intern/bmesh_core.c
index ccb09623e24..e761592c1cf 100644
--- a/source/blender/bmesh/intern/bmesh_core.c
+++ b/source/blender/bmesh/intern/bmesh_core.c
@@ -2423,9 +2423,10 @@ static void bmesh_kernel_vert_separate__cleanup(BMesh *bm, LinkNode *edges_separ
 					/* don't visit again */
 					n_prev->next = n_step->next;
 				}
-			} while ((void)
-			         (n_prev = n_step),
-			         (n_step = n_step->next));
+				else {
+					n_prev = n_step;
+				}
+			} while ((n_step = n_step->next));
 
 		} while ((n_orig = n_orig->next) && n_orig->next);
 	} while ((edges_separate = edges_separate->next));