[Bug 46979] New: Winecfg hangs (winedevice.exe 100% CPU usage) when removing an assigned drive

https://bugs.winehq.org/show_bug.cgi?id=46979

Bug ID: 46979
           Summary: Winecfg hangs (winedevice.exe 100% CPU usage) when
                    removing an assigned drive
           Product: Wine
           Version: 4.5
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, regression, source
          Severity: normal
          Priority: P2
         Component: wineserver
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
   Regression SHA1: b4f78d6896a7fc85b3ec29d3db30d5d8e9b790e8
      Distribution: ArchLinux

Steps to reproduce:

1. create a new wineprefix by running winecfg. Go to the <Drives> tab and add a
new drive pointing to any existing directory on your filesystem e.g. your home
directory. Click <Apply> then <OK> to accept the changes and quit winecfg.
2. re-run winecfg, visit the <Drives> tab and remove the previously created
drive from the list then click <Apply>....winecfg hangs (no visible terminal
output, winedevice consumes 100% CPU).

Another scenario (an external USB hard drive was mounted then unmounted between
those 2 steps).
When the external hdd is mounted on my system, existing partitions on the drive
are automatically added to the drive list in winecfg. Exit winecfg and unmount
the partition(s) from your system then re-run winecfg and try to open the
<Drives> tab: Wine hangs again, now something like this is present in the
terminal:
0017:err:ntdll:RtlpWaitForCriticalSection section 0xf7d67700
"../../../dlls/mountmgr.sys/device.c: device_section" wait timed out in thread
0017, blocked by 0019, retrying (60 sec)

Reverting commit b4f78d6896a7fc85b3ec29d3db30d5d8e9b790e8 fixes the problem for
me.

Tested and reproduced in wine-4.5-222-g8ee1e3453e.