Fix for issue #39. Untested on real big-endian hardware.

[ghost]

Tiny bug fix to be confident with the contribution process. Hoping <3 will follow :)
WARNING : this patch is wrong :-/

[smortex]

The le24toh() function is endianess agnostic by design… Verified on both little-endian (amd64) and big-endian (sparc64) hardware with the following snippet of code:

#include <sys/types.h>

#include <stdio.h>
#include <stdlib.h>

static int32_t
le24toh (uint8_t data[3])
{
    return (data[2] << 16) | (data[1] << 8) | data[0];
}

int
main (void)
{
    uint8_t buffer[] = {
        0x01, 0x23, 0x45
    };

    int32_t val;

    val = le24toh (buffer);

    printf ("0x%06x\n", val);

    exit (EXIT_SUCCESS);
}

On both systems, the output is 0x452301 as expected.

[smortex]

Otherwise, the pull-request submission process seems okay :-)