[Bf-blender-cvs] [878cd0e1246] blender-v2.83-release: Silence annoying error message in writefile on undo step storage.

[Bastien Montagne]

Commit: 878cd0e1246f173066035e5240ed38016122bba4
Author: Bastien Montagne
Date:   Wed Apr 22 16:14:35 2020 +0200
Branches: blender-v2.83-release
https://developer.blender.org/rB878cd0e1246f173066035e5240ed38016122bba4

Silence annoying error message in writefile on undo step storage.

Fix T75318: Error spam in console when opening file from 2.7x.

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

M	source/blender/blenloader/intern/writefile.c

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

diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 8c79d9ac431..2b32621eb37 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -2194,7 +2194,7 @@ static void write_customdata(WriteData *wd,
         datasize = structnum * count;
         writestruct_id(wd, DATA, structname, datasize, layer->data);
       }
-      else {
+      else if (!wd->use_memfile) { /* Do not warn on undo. */
         printf("%s error: layer '%s':%d - can't be written to file\n",
                __func__,
                structname,