tdehw lib: make the call to close the file explicit.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit a2edae37ac)

tdecore/tdehw/tdestoragedevice.cpp

@@ -754,6 +754,7 @@ TQString TDEStorageDevice::mountPath() {
 			if ((testNode == deviceNode()) || (testNode == dmaltname) || (testNode == ("/dev/disk/by-uuid/" + diskUUID()))) {
 				TQString ret = *mountInfo.at(1);
 				ret.replace("\\040", " ");
+				file.close();
 				return ret;
 			}
 			lines += line;