Fix duplication UnixFD during demarshall

Fix uninitialized UnixFD private data

tqdbusmarshall.cpp

@@ -599,8 +599,11 @@ static TQT_DBusData qFetchParameter(DBusMessageIter *it)
 
         return TQT_DBusData::fromStruct(memberList);
     }
-    case DBUS_TYPE_UNIX_FD:
+    case DBUS_TYPE_UNIX_FD: {
-        return TQT_DBusData::fromUnixFd(TQT_DBusUnixFd(qIterGet<dbus_uint32_t>(it)));
+        TQT_DBusUnixFd unixFd;
+        unixFd.giveFileDescriptor(qIterGet<dbus_uint32_t>(it));
+        return TQT_DBusData::fromUnixFd(unixFd);
+    }
 #if 0
     case DBUS_TYPE_INVALID:
         // TODO: check if there is better way to detect empty arrays

tqdbusunixfd.cpp

@@ -35,7 +35,7 @@ TQT_DBusUnixFd::TQT_DBusUnixFd(const TQT_DBusUnixFd& other) : d(other.d)
     d->ref();
 }
 
-TQT_DBusUnixFd::TQT_DBusUnixFd(int other)
+TQT_DBusUnixFd::TQT_DBusUnixFd(int other) : d(0)
 {
     setFileDescriptor(other);
 }