[test] Relax recursion depth limit in webkit test.

test/webkit/fast/js/deep-recursion-test.js

Index: test/webkit/fast/js/deep-recursion-test.js
diff --git a/test/webkit/fast/js/deep-recursion-test.js b/test/webkit/fast/js/deep-recursion-test.js
index c2a695da4680e511224a4571b98bd2227ce213a8..df008ba61e0d9d1e2437af66e37bdb8d98009bc1 100644
--- a/test/webkit/fast/js/deep-recursion-test.js
+++ b/test/webkit/fast/js/deep-recursion-test.js
@@ -29,7 +29,7 @@ description("This test how deep we can recurse, and that we get an exception whe
     }
 
     try {
-        simpleRecursion(17472);
+        simpleRecursion(5000);
     } catch (ex) {
         debug("FAIL: " + ex);
     }