Fix issue when firing TimerProc() destroys timer

testing/resources/bug_634394.pdf

Index: testing/resources/bug_634394.pdf
diff --git a/testing/resources/bug_620428.pdf b/testing/resources/bug_634394.pdf
similarity index 96%
copy from testing/resources/bug_620428.pdf
copy to testing/resources/bug_634394.pdf
index ff625b7a2e387d4a2d67b1b14a2667bc18466075..a17a9f213e5153356f7277b1fe6d59736fe540aa 100644
--- a/testing/resources/bug_620428.pdf
+++ b/testing/resources/bug_634394.pdf
@@ -66,16 +66,16 @@ endobj
 50 0 obj <<
 >>
 stream
+var timer = app.setTimeOut("fireTimeOut()", 3000);
+var interval = app.setInterval("fireInterval()", 1000);
 function fireTimeOut() {
-  app.alert("hello world");
+  app.alert("goodbye world");
+  app.clearInterval(interval);
 }
 function fireInterval() {
-  app.alert("goodbye world");
+  app.alert("hello world");
+  app.clearInterval(interval);
 }
-var timer = app.setTimeOut("fireTimeOut()", 3000);
-var interval = app.setInterval("fireInterval()", 1000);
-app.clearTimeOut(timer);
-app.clearInterval(interval);
 endstream
 endobj
 xref
@@ -135,5 +135,5 @@ trailer <<
   /Root 1 0 R
 >>
 startxref
-1135
+1143
 %%EOF