Fix from Ming-Yee Iu to address http://bugzilla.mozilla.org/show_bug.cgi?id=217951

js/rhino/src/org/mozilla/javascript/Interpreter.java

@@ -2319,7 +2319,6 @@ public class Interpreter
             cx.instructionCount = instructionCount;
             instructionCount = -1;
         }
-        cx.instructionCount = instructionCount;
         int count = getIndex(iCode, pc + 3);
         stackTop -= count;
         int calleeArgShft = stackTop + 1;