Add warning in function documentation
The function parsing "ip route" output modifies the input buffer to
tokenize in place. This must be mentioned in the function documentation.
/**
* Parse the ip from the output of `adb shell ip route`
+ *
+ * Warning: this function modifies the buffer for optimization purposes.
*/
char *
sc_adb_parse_device_ip_from_output(char *buf, size_t buf_len);
