Fix for [#26617] convert hair particles to mesh crash rev:35787

* Hair to mesh conversion wasn't making sure the hairs had valid keys
* Patch by Sergey Sharybin

1 files changed, 10 insertions, 4 deletions

diff --git a/source/blender/editors/object/object_modifier.c b/source/blender/editors/object/object_modifier.c
index b57935bc392..ff1b693d0e1 100644
--- a/source/blender/editors/object/object_modifier.c
+++ b/source/blender/editors/object/object_modifier.c
@@ -309,15 +309,21 @@ int ED_object_modifier_convert(ReportList *UNUSED(reports), Main *bmain, Scene *
 	cache= psys->pathcache;
 	for(a=0; a<totpart; a++) {
 		key= cache[a];
-		totvert+= key->steps+1;
-		totedge+= key->steps;
+
+		if(key->steps > 0) {
+			totvert+= key->steps+1;
+			totedge+= key->steps;
+		}
 	}
 
 	cache= psys->childcache;
 	for(a=0; a<totchild; a++) {
 		key= cache[a];
-		totvert+= key->steps+1;
-		totedge+= key->steps;
+
+		if(key->steps > 0) {
+			totvert+= key->steps+1;
+			totedge+= key->steps;
+		}
 	}
 
 	if(totvert==0) return 0;