qt3: fixed error on creating qt3.profile

arch/3.5.13/trinity-base/trinity-qt3/PKGBUILD

@@ -186,8 +186,8 @@ package() {
    install -d -m755 ${pkgdir}/etc/profile.d/
    echo "export QT3DIR=${_prefix}" > ${pkgdir}/etc/profile.d/qt3.sh
    echo "export QT_XFT=true" >> ${pkgdir}/etc/profile.d/qt3.sh
-   echo "export PATH=$PATH:$QT3DIR/bin" >> ${pkgdir}/etc/profile.d/qt3.sh
-   echo "export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$QT3DIR/pkgconfig" >> ${pkgdir}/etc/profile.d/qt3.sh
+echo "export PATH=$PATH:${_prefix}/bin" >> ${pkgdir}/etc/profile.d/qt3.sh
+echo "export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${_prefix}/pkgconfig" >> ${pkgdir}/etc/profile.d/qt3.sh
 
    # ln -sf /opt/qt/bin/qtconfig "${pkgdir}"/opt/qt/bin/qt3config