lsm303d: close fds before exit

src/drivers/lsm303d/lsm303d.cpp

@@ -1770,6 +1770,8 @@ start()
 		}
 	}
 
+        close(fd);
+        close(fd_mag);
 
 	exit(0);
 fail:
@@ -1851,6 +1853,9 @@ test()
 
 	/* XXX add poll-rate tests here too */
 
+        close(fd_accel);
+        close(fd_mag);
+
 	reset();
 	errx(0, "PASS");
 }
@@ -1872,6 +1877,8 @@ reset()
 	if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0)
 		err(1, "accel pollrate reset failed");
 
+        close(fd);
+
 	fd = open(LSM303D_DEVICE_PATH_MAG, O_RDONLY);
 
 	if (fd < 0) {
@@ -1882,6 +1889,8 @@ reset()
 			err(1, "mag pollrate reset failed");
 	}
 
+        close(fd);
+
 	exit(0);
 }