Fix file descriptor leak in serial.c

Found by Coverity as "CID 1348465:  Resource leaks".

Corresponding to flashrom svn r1915.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
1 file changed