memory overwrite in samd21_host.c

[alanambrose]

I believe this fix is needed in UHD_Init. I tracked down an overwrite in some memory I had allocated which was being stamped on by the loop below with the uint32 cast (because sizeof() returns # bytes and the uint32 casting counts up in 32-bit words). The replacement memset works fine.:

// ACA - memory overwrite!!
memset(usb_pipe_table,0,sizeof(usb_pipe_table));
/*
for (i = 0; i < sizeof(usb_pipe_table); i++)
{
	(*(uint32_t *)(&usb_pipe_table[0] + i)) = 0;
}
*/

[sandeepmistry]

Hi @alanambrose,

The suggestion looks good to me, would you like to submit a pull request for it?

[sandeepmistry]

Closed via #355.