Possible buffer overflow using nmbs_read_holding_registers()

[RonaldZwInventeers]

Situation

Accidentally connected two masters on one serial bus. This resulted in buffer overflows when calling nmbs_read_holding_registers()

Cause

Debugging found the possibility of buffer overflow in recv_read_registers_res(). Where quantity is not used to limit the amount of writes to registers.

Solution

Limit the for loop iterations or return error when (registers_bytes / 2) != quantity in recv_read_registers_res().

[debevv]

Fixed in 0234a563c1560a06d503011a7dc763c647aaa4c5
Thank you