pwm: remove unused variable

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
spi: fix brackets

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
gpio: fix memory leak

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Merge pull request #11 from yegorich/spi

spi: fix brackets
Merge pull request #10 from yegorich/cppcheck

pwm: remove unused variable
Merge pull request #12 from yegorich/gpio

gpio: fix memory leak