[Bf-blender-cvs] [1e5ce391563] master: Fix T78900: Single vertex sliding crashes

[Germano Cavalcante]

Commit: 1e5ce391563f48c487862e5f05c6517e98a42e21
Author: Germano Cavalcante
Date:   Tue Jul 14 09:30:54 2020 -0300
Branches: master
https://developer.blender.org/rB1e5ce391563f48c487862e5f05c6517e98a42e21

Fix T78900: Single vertex sliding crashes

As we can see in `initVertSlide_ex`, `sld` can be `NULL`.
`sld` is dereferenced, but can still be `NULL`.

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M	source/blender/editors/transform/transform_mode_vert_slide.c

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diff --git a/source/blender/editors/transform/transform_mode_vert_slide.c b/source/blender/editors/transform/transform_mode_vert_slide.c
index 9e810b9c629..4bcc4cc6383 100644
--- a/source/blender/editors/transform/transform_mode_vert_slide.c
+++ b/source/blender/editors/transform/transform_mode_vert_slide.c
@@ -500,6 +500,10 @@ static void doVertSlide(TransInfo *t, float perc)
 
   FOREACH_TRANS_DATA_CONTAINER (t, tc) {
     VertSlideData *sld = tc->custom.mode.data;
+    if (sld == NULL) {
+      continue;
+    }
+
     TransDataVertSlideVert *svlist = sld->sv, *sv;
     int i;