Fix structured cloning deserialization bug that could create invalid Date objects. Bug 602806, r=gal.

js/src/jsdate.cpp

@@ -152,7 +152,6 @@ using namespace js;
  * Supporting functions - ECMA 15.9.1.*
  */
 
-#define HalfTimeDomain  8.64e15
 #define HoursPerDay     24.0
 #define MinutesPerDay   (HoursPerDay * MinutesPerHour)
 #define MinutesPerHour  60.0
@@ -482,10 +481,6 @@ msFromTime(jsdouble t)
     return result;
 }
 
-#define TIMECLIP(d) ((JSDOUBLE_IS_FINITE(d) \
-                      && !((d < 0 ? -d : d) > HalfTimeDomain)) \
-                     ? js_DoubleToInteger(d + (+0.)) : js_NaN)
-
 /**
  * end of ECMA 'support' functions
  */