Fixing file-not-found error on dom test.

tools/tinderbox/build-seamonkey-util.pl

@@ -23,7 +23,7 @@ use Config;         # for $Config{sig_name} and $Config{sig_num}
 use File::Find ();
 use File::Copy;
 
-$::UtilsVersion = '$Revision: 1.240 $ ';
+$::UtilsVersion = '$Revision: 1.241 $ ';
 
 package TinderUtils;
 
@@ -1663,7 +1663,7 @@ sub run_all_tests {
         and $test_result eq 'success') {
         $test_result =
             FileBasedTest("DomToTextConversionTest", $build_dir, $binary_dir,
-                          ["perl TestOutSinks.pl"], $Settings::DomTestTimeout,
+                          ["perl", "TestOutSinks.pl"], $Settings::DomTestTimeout,
                           "FAILED", 0, 0);  # Timeout means failure.
     }