Bug 610480 nit fix: use old-style comments in jsapi.h

js/src/jsapi.h

@@ -360,8 +360,10 @@ JSID_TO_INT(jsid id)
     return ((int32)JSID_BITS(id)) >> 1;
 }
 
-// Note: when changing these values, verify that their use in
-// js_CheckForStringIndex is still valid.
+/*
+ * Note: when changing these values, verify that their use in
+ * js_CheckForStringIndex is still valid.
+ */
 #define JSID_INT_MIN  (-(1 << 30))
 #define JSID_INT_MAX  ((1 << 30) - 1)