[Bug 47469] New: winecfg fails on winearch=""

https://bugs.winehq.org/show_bug.cgi?id=47469

Bug ID: 47469
           Summary: winecfg fails on winearch=""
           Product: Wine
           Version: 4.12
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: Ubuntu

WINE Version 4.12, winearch="", winecfg crashes, works with winearch=win32.
WINE Version 4.11, winearch="", winearch=win32 works.

Travis build, Ubuntu xenial. headless, xvfb stopped

WINE Version 4.12:

Environment: 
winearch=""  # (so 64 Bit)
wineprefix="/home/travis/wine/wine64"

winecfg crashes with : 
wine: Unhandled page fault on write access to 0x00000030 at address 0x4024f5
(thread 000b), starting debugger...

see: 
https://travis-ci.org/bitranox/lib_registry/jobs/554992058

with the same environment: 
WINE Version 4.12, winearch=win32 --> WORKS ! 
see: https://travis-ci.org/bitranox/lib_registry/jobs/554992059

WINE Version 4.11, winearch="" --> WORKS !
see: https://travis-ci.org/bitranox/lib_registry/jobs/554992066

WINE Version 4.11, winearch=win32 --> WORKS !
see: https://travis-ci.org/bitranox/lib_registry/jobs/554992065