dwm module crashes when steam is closed

[quasinormalguy]

Checklist

• I have read the appropriate section in the contributing
  guidelines
• I believe this issue is a problem with polybar itself and not a misconfiguration on my part.
• I have searched for other open and closed issues that
  may have already reported this problem.
• I have checked the known issues page for this problem.

Describe the bug

Expected behavior:

Actual behavior:

Was it working before?

• Did you also experience this bug in an earlier version of polybar (yes/no/don't know)?
• If no, what was the last version where this worked correctly?

To Reproduce

Open steam and close with Mod+Shift+c

Polybar Log

polybar|error: Failed to setup tray client, removing... (XCB_WINDOW (3))
polybar|error: module/dwm: [dwmipcpp] Client with window id 44040237 not found
polybar|notice:  Stopping 'module/dwm'...

Screenshots

Environment:

• WM: dwm
• Distro: Arch Linux
• Output of polybar -vvv:

polybar 3.5.2-100-g0c3e139a

Features: +alsa +curl +dwm +i3 +mpd +network(libnl) +pulseaudio +xkeyboard

X extensions: +randr (+monitors) +composite +xkb +xrm +xcursor

Build type: Release
Compiler: /usr/bin/c++
Compiler flags: -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -Wall -Wextra -Wpedantic -O3 -DNDEBUG
Linker flags: -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now 

Additional context

[quasinormalguy]

same as issue #26