adding and ' at ' in line

[f00b455]

this fixes crash on start with following card attached:

cat /proc/asound/card1/stream0
Dell-WD15-Dock : USB Audio

Playback:
  Status: Stop
  Interface 2
    Altset 1
    Format: S24_3LE
    Channels: 2
    Endpoint: 0x07 (7 OUT) (ADAPTIVE)
    Rates: 48000
    Data packet interval: 1000 us
    Bits: 24
    Channel map: FL FR

Capture:
  Status: Running
    Interface = 1
    Altset = 1
    Packet Size = 336
    Momentary freq = 48000 Hz (0x6.0000)
  Interface 1
    Altset 1
    Format: S24_3LE
    Channels: 2
    Endpoint: 0x81 (1 IN) (ASYNC)
    Rates: 48000
    Data packet interval: 1000 us
    Bits: 24
    Channel map: FL FR

[ovenwerks]

@f00b455 Thank you for your contribution. I was not able to merge this directly but have added your code into my current working file for next release.
Could I get you to attach your /proc/asound/[device]/usbmixer file to a comment here? While your patch is valid to stop a crash, it leaves out information that would be useful for differentiating devices of the same type.

[f00b455]

Dell-WD15-Dock.txt

[f00b455]

@f00b455 Thank you for your contribution. I was not able to merge this directly but have added your code into my current working file for next release. Could I get you to attach your /proc/asound/[device]/usbmixer file to a comment here? While your patch is valid to stop a crash, it leaves out information that would be useful for differentiating devices of the same type.

I needed a quick fix directly ;-)