cancel usb redirection will crash

Submitted by magicdmer@gmail.com

Assigned to Spice Bug List

Link to original bug (#101434)

Description

I use usb storage redirection , all is ok, but when i uncheck it or close remote-viewer window, the usb is free but the remote-viewer or spicy will crash

I test it ,the result like follow: (1) spice-gtk v0.33 platform: win7 x64

1. virt-viewer-5.0-x86.msi + usbdk_1.0.19_x64 uncheck crashed!
2. virt-viewer-5.0-x64.msi + usbdk_1.0.19_x64 success, all is ok!

platform: win7 x86 1.virt-viewer-5.0-x86.msi + usbdk_1.0.19_x86 uncheck crashed!

(2) I build spice-gtk v0.32 with usb redirection and replace it

1. virt-viewer-5.0-x86.msi + usbdk_1.0.19_x86 uncheck crashed!
2. virt-viewer-5.0-x86.msi + usbclerk uncheck crashed!

(3) I build spice-gtk v0.31,and replace it 1.virt-viewer-5.0-x86.msi + usbclerk success,all is ok!