unref-stdin.patch

diff --git a/src/node.js b/src/node.js
index 15cccb6..5c83462 100644
--- a/src/node.js
+++ b/src/node.js
@@ -326,6 +326,10 @@
       // For supporting legacy API we put the FD here.
       stdin.fd = fd;
 
+      // Unref the handle so it doesn't keep the event loop alive.
+      // .resume() refs the handle and the user needs to call that anyway.
+      if (stdin._handle) stdin._handle.unref();
+
       return stdin;
     });