No bug, fix windows build bustage due to int32 type mismatch, r=burning, rs=njn

js/src/jsinterp.h

@@ -740,8 +740,8 @@ struct JSStackFrame
 
     static ptrdiff_t offsetOfThis(JSFunction *fun) {
         return fun == NULL
-               ? -1 * sizeof(js::Value)
-               : -(fun->nargs + 1) * sizeof(js::Value);
+               ? -1 * ptrdiff_t(sizeof(js::Value))
+               : -(fun->nargs + 1) * ptrdiff_t(sizeof(js::Value));
     }
 
     static ptrdiff_t offsetOfFormalArg(JSFunction *fun, uintN i) {

js/src/jsnum.cpp

@@ -1039,7 +1039,7 @@ FracNumberToCString(JSContext *cx, ToCStringBuf *cbuf, jsdouble d, jsint base =
 {
 #ifdef DEBUG
     {
-        int32 _;
+        int32_t _;
         JS_ASSERT(!JSDOUBLE_IS_INT32(d, &_));
     }
 #endif