Merge to M53: Fix issue when firing TimerProc() destroys timer

testing/resources/bug_634394.in

Index: testing/resources/bug_634394.in
diff --git a/testing/resources/bug_551248.in b/testing/resources/bug_634394.in
similarity index 79%
copy from testing/resources/bug_551248.in
copy to testing/resources/bug_634394.in
index ad10e93912cb2323ded1665b4de5f8aafab5e0b5..528b4637da314def9192be2c71d081a63b45ce82 100644
--- a/testing/resources/bug_551248.in
+++ b/testing/resources/bug_634394.in
@@ -65,11 +65,16 @@ endobj
 {{object 50 0}} <<
 >>
 stream
-function startDelay()
-{
+var timer = app.setTimeOut("fireTimeOut()", 3000);
+var interval = app.setInterval("fireInterval()", 1000);
+function fireTimeOut() {
+  app.alert("goodbye world");
+  app.clearInterval(interval);
+}
+function fireInterval() {
   app.alert("hello world");
+  app.clearInterval(interval);
 }
-app.setTimeOut("startDelay()", 3000);
 endstream
 endobj
 {{xref}}