backout Bug 485959, disable-jit bustage.

js/src/jsinterp.cpp

@@ -2772,12 +2772,7 @@ js_Interpret(JSContext *cx)
         if ((n) <= 0) {                                                       \
             CHECK_BRANCH();                                                   \
             if (op == JSOP_NOP) {                                             \
-                if (TRACE_RECORDER(cx)) {                                     \
-                    MONITOR_BRANCH();                                         \
-                    op = (JSOp) *regs.pc;                                     \
-                } else {                                                      \
-                    op = (JSOp) *++regs.pc;                                   \
-                }                                                             \
+                op = (JSOp) *++regs.pc;                                       \
             } else if (op == JSOP_LOOP) {                                     \
                 MONITOR_BRANCH();                                             \
                 op = (JSOp) *regs.pc;                                         \