Fix hangs when transfer errors occur #407

Job	Run time
build (metro_m0)	1m 38s
build (hallowing)	1m 30s
build (circuitplayground_m0)	1m 45s
build (metro_m4)	1m 36s
build (pybadge_m4)	1m 33s
build (pygamer_m4)	1m 37s
build (hallowing_m4)	1m 58s
build (pyportal_m4)	1m 39s
build (pyportal_m4_titano)	1m 42s
build (feather_m4_can)	1m 35s
build (metro_m0:usbstack=tinyusb)	5m 23s
build (metro_m4:speed=120,usbstack=tinyusb)	5m 50s
	27m 46s

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