The following APIs are only used for getting the line information from
kernel by opening the gpiochip independently and they fails to close
the file descriptor when done:
1. mraa_get_line_info_by_chip_number()
2. mraa_get_line_info_by_chip_name()
3. mraa_get_line_info_by_chip_label()
This will create issue if these API consumers like mraa_gpio_read_dir(),
mraa_gpio_mode(), mraa_gpio_chardev_dir() gets called in a loop. The
system will run out of file descriptor after some time.
Fix this issue by closing the opened file descriptors before freeing
the cinfo struct.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: malikabhi05 <abhishek.malik@intel.com>
b04e728957