usbus: don't trigger assertion in usbus_urb_submit()

[benpicco]

Contribution description

Testing procedure

• flash tests/sys/usbus_cdc_ecm
• reboot the host system

On master this assertion will trigger, with this patch the duplicate URB is ignored.

Network operation continues normal:

2023-05-24 18:24:36,366 - INFO # > ping -c 200 ff02::1%8
2023-05-24 18:24:36,367 - INFO # 
2023-05-24 18:24:36,375 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=0 ttl=64 time=1.639 ms
2023-05-24 18:24:37,375 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=1 ttl=64 time=1.433 ms
2023-05-24 18:24:38,377 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=2 ttl=64 time=2.525 ms
2023-05-24 18:24:39,377 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=3 ttl=64 time=2.372 ms
2023-05-24 18:24:40,378 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=4 ttl=64 time=2.463 ms
2023-05-24 18:24:41,378 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=5 ttl=64 time=2.266 ms
# host reboots
2023-05-24 18:25:01,389 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=25 ttl=64 time=4.084 ms
2023-05-24 18:25:02,387 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=26 ttl=64 time=1.508 ms
2023-05-24 18:25:03,387 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=27 ttl=64 time=1.362 ms
2023-05-24 18:25:04,389 - INFO # 12 bytes from fe80::650a:e7fd:8b57:c7e8%8: icmp_seq=28 ttl=64 time=2.511 ms

Issues/PRs references

fixes #19663

[riot-ci]

Murdock results

✔️ PASSED

153dbd2 usbus: don't trigger assertion in usbus_urb_submit()

Success	Failures	Total	Runtime
6933	0	6933	10m:10s

Artifacts

• Documentation preview

[maribu]

bors merge

[bors]

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• Murdock
• static-tests
• tools-build-success