Still more whitespace fixing.

test/test_slave.html

@@ -203,7 +203,7 @@ function clear(ctx) {
 /* Auto-scroll if the scrollbar is near the bottom, otherwise do nothing. */
 function checkScrolling() {
   if ((stdout.scrollHeight - stdout.scrollTop) <= stdout.offsetHeight) {
-     stdout.scrollTop = stdout.scrollHeight;
+    stdout.scrollTop = stdout.scrollHeight;
   }
 }