WiFiUDP.parseInt - Infinite Loop/WDT Reset

[AllanMar]

parseInt can get caught in a loop if called on a buffer with no integers remaining . Which causes peekNextDigit to continue to loop.
peek() should probably check if there is any data left and return -1 otherwise.
WiFiUdp.cpp:

int WiFiUDP::peek()
{
    if (!_ctx)
        return 0;

    return _ctx->peek();
}

Possibly change to:

int WiFiUDP::peek()
{
    if (!_ctx || !available())
        return -1;

    return _ctx->peek();
}