From 796d9f28d856243aec3475de3fcb952000601a1a Mon Sep 17 00:00:00 2001
From: "shaver%netscape.com"
 <shaver%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Mon, 27 Sep 1999 06:04:54 +0000
Subject: [PATCH] properly unlock object, preventing ugly crash with |if (foo
 in noFoo)|

git-svn-id: svn://10.0.0.236/trunk@49118 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/js/src/jsinterp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mozilla/js/src/jsinterp.c b/mozilla/js/src/jsinterp.c
index 7ff6324b3a6..76025197905 100644
--- a/mozilla/js/src/jsinterp.c
+++ b/mozilla/js/src/jsinterp.c
@@ -1257,7 +1257,8 @@ js_Interpret(JSContext *cx, jsval *result)
 	    if (!ok)
 		goto out;
 	    PUSH_OPND(BOOLEAN_TO_JSVAL(prop != NULL));
-            OBJ_DROP_PROPERTY(cx, obj, prop);
+            if (prop)
+                OBJ_DROP_PROPERTY(cx, obj2, prop);
 	    break;
 #endif /* JS_HAS_IN_OPERATOR */