multimeter plugin: fix fd leak

If open returns 0 we leak fd.

CID #38016

Signed-off-by: Florian Forster <octo@collectd.org>

diff --git a/src/multimeter.c b/src/multimeter.c
index 775eb57..03608e6 100644 (file)
--- a/src/multimeter.c
+++ b/src/multimeter.c
@@ -153,9 +153,9 @@ static int multimeter_init (void)
 
        for (i = 0; i < 10; i++)
        {
-               device[strlen(device)-1] = i + '0'; 
+               device[strlen(device)-1] = i + '0';
 
-               if ((fd = open(device, O_RDWR | O_NOCTTY)) > 0)
+               if ((fd = open(device, O_RDWR | O_NOCTTY)) != -1)
                {
                        struct termios tios;
                        int rts = TIOCM_RTS;
@@ -171,7 +171,7 @@ static int multimeter_init (void)
                        tcflush(fd, TCIFLUSH);
                        tcsetattr(fd, TCSANOW, &tios);
                        ioctl(fd, TIOCMBIC, &rts);
-                       
+
                        if (multimeter_read_value (&value) < -1)
                        {
                                close (fd);