ext/libuv/src/unix/process.c in libuv-0.12.2 vs ext/libuv/src/unix/process.c in libuv-0.12.3

@@ -314,10 +314,10 @@
       dup2(use_fd, fd);
 
     if (fd <= 2)
       uv__nonblock(fd, 0);
 
-    if (close_fd != -1)
+    if (close_fd >= stdio_count)
       uv__close(close_fd);
   }
 
   for (fd = 0; fd < stdio_count; fd++) {
     use_fd = pipes[fd][1];