Fix assertion failure in mjsunit/regexp-stack-overflow.

test/mjsunit/regexp-stack-overflow.js

Index: test/mjsunit/regexp-stack-overflow.js
diff --git a/test/mjsunit/regexp-stack-overflow.js b/test/mjsunit/regexp-stack-overflow.js
index b6232a87ca40f7d2e8ea8fa48f94185829bce1e3..637d205642d2032c9415f06e839d0788973a1ab3 100644
--- a/test/mjsunit/regexp-stack-overflow.js
+++ b/test/mjsunit/regexp-stack-overflow.js
@@ -5,7 +5,6 @@
 // Flags: --stack-size=100
 
 var result = null;
-var type = true;
 var re = /\w/;
 re.test("a");  // Trigger regexp compile.
 
@@ -13,10 +12,8 @@ function rec() {
   try {
     return rec();
   } catch (e) {
-    if (!(e instanceof RangeError)) type = false;
     return re.test("b");
   }
 }
 
 assertTrue(rec());
-assertTrue(type);