power2mW buffer overflow

[mikaelnousiainen]

I saw this issue described in a tweet: https://twitter.com/JeffSipek/status/1457167104600383488

Here's the content:

TIL that hamlib uses sprintf in its netrigctl code. If I try to get the power (via rig_power2mW) and specify a frequency with more than 7 decimal digits (IOW >9.999999 MHz), it overflows the command buffer. macOS catches this somehow and kills the process

The format string is:

“\power2mW %f %.0f %s\n”

The first %f produces: 0.250000
The second: 14230000
The %s: USB

For a total of 32 bytes written to a: char cmdbuf[32];

[mdblack98]

Fixed