diff --git a/mozilla/js2/src/js2execution.cpp b/mozilla/js2/src/js2execution.cpp
index a088ab7d840..f78f0aedd16 100644
--- a/mozilla/js2/src/js2execution.cpp
+++ b/mozilla/js2/src/js2execution.cpp
@@ -2331,7 +2331,6 @@ JSValue JSValue::valueToUInt16(Context *, const JSValue& value)
 
 JSValue JSValue::valueToBoolean(Context *cx, const JSValue& value)
 {
-    JSObject *obj = NULL;
     switch (value.tag) {
     case f64_tag:
         if (JSDOUBLE_IS_NaN(value.f64))