Update script to flush buffer

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@175711 13f79535-47bb-0310-9956-ffa450edef68

scripts/sanityTest.pl

@@ -72,6 +72,9 @@
 
 $os     = $ARGV[0];
 
+# flush output
+$| = 1;
+
 if (lc($os) eq "win") {
     $pathsep = "\\";
 }