devices: Trivial coding style fix

* block statement doesn't need a semicolon.
* put closing curly bracket of function on a new line.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
diff --git a/src/devices/rfkill.cpp b/src/devices/rfkill.cpp
index 750175c..2404432 100644
--- a/src/devices/rfkill.cpp
+++ b/src/devices/rfkill.cpp
@@ -63,11 +63,12 @@
 	sprintf(filename, "%s/device/driver", path);
 	if (readlink(filename, line, 4096) > 0) {
 		sprintf(humanname, _("Radio device: %s"), basename(line));
-	};
+	}
 	sprintf(filename, "%s/device/device/driver", path);
 	if (readlink(filename, line, 4096) > 0) {
 		sprintf(humanname, _("Radio device: %s"), basename(line));
-	}}
+	}
+}
 
 void rfkill::start_measurement(void)
 {