tsort.pl: adjust error message

util/gnu-patches/tests_tsort.patch

@@ -0,0 +1,17 @@
+diff --git a/tests/misc/tsort.pl b/tests/misc/tsort.pl
+index 70bdc474c..4fd420a4e 100755
+--- a/tests/misc/tsort.pl
++++ b/tests/misc/tsort.pl
+@@ -54,8 +54,10 @@ my @Tests =
+ 
+    ['only-one', {IN => {f => ""}}, {IN => {g => ""}},
+     {EXIT => 1},
+-    {ERR => "tsort: extra operand 'g'\n"
+-     . "Try 'tsort --help' for more information.\n"}],
++    {ERR => "error: unexpected argument 'g' found\n\n"
++         . "Usage: tsort [OPTIONS] FILE\n\n"
++         . "For more information, try '--help'.\n"
++    }],
+   );
+ 
+ my $save_temps = $ENV{DEBUG};