Better ifdef for futimes

src/node_file.cc

@@ -910,8 +910,8 @@ static Handle<Value> FUTimes(const Arguments& args) {
   if (args[3]->IsFunction()) {
     ASYNC_CALL(futime, args[3], fd, atime, mtime);
   } else {
-#ifdef __sun
+#ifndef futimes
-    // Solaris does not have futimes
+    // Some systems do not have futimes
     return ThrowException(ErrnoException(ENOSYS, "futimes", "", 0));
 #else
     timeval times[2];
@@ -920,7 +920,7 @@ static Handle<Value> FUTimes(const Arguments& args) {
     if (futimes(fd, times) == -1) {
       return ThrowException(ErrnoException(errno, "futimes", "", 0));
     }
-#endif  //__sun
+#endif  // futimes
   }
 
   return Undefined();