[PATCH] drivers/usbdev/cdcacm.c: fix memory leak of RX failsafe timer

[Juha Niskanen (Haltian)]

Hi Greg,

Patch fixes a memory leak that I found when doing something like this in my PM code:

/* Uninitialize USB console before Stop 2 (STM32L4 USB FS peripheral must be in reset state) */

cdcacm_uninitialize()

up_usbuninitialize()

stm32l4_pmstop2();

up_usbinitialize()

cdcacm_initialize()

...

Best Regards,

   Juha