Remove superfluous slash in desktop-file-validate command line

trader.spec

@@ -13,7 +13,7 @@
 
 Name:           trader
 Version:        7.10
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Star Traders, a simple game of interstellar trading
 License:        GPLv3+
 Group:          Amusements/Games
@@ -40,7 +40,7 @@ order to become the wealthiest player (the winner).
 %install
 %make_install
 %find_lang %{name}
-desktop-file-validate %{buildroot}/%{_datadir}/applications/%{name}.desktop
+desktop-file-validate %{buildroot}%{_datadir}/applications/%{name}.desktop
 
 %files -f %{name}.lang
 %doc README NEWS
@@ -63,6 +63,9 @@ fi
 /usr/bin/gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 
 %changelog
+* Sun Jun 04 2017 John Zaitseff <J.Zaitseff@zap.org.au> - 7.10-2
+- Removed superfluous slash in desktop-file-validate command line.
+
 * Fri Jun 02 2017 John Zaitseff <J.Zaitseff@zap.org.au> - 7.10-1
 - Updated the RPM package for a new release of Star Traders: verison 7.10.
 - Changed a dependency from ncurses-devel to pkgconfig(ncurses), now that