child_process: don't emit same handle twice

It's possible to read multiple messages off the parent/child channel.
When that happens, make sure that recvHandle is cleared after emitting
the first message so it doesn't get emitted twice.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/child_process.js b/lib/child_process.js
index 52435913e94..e67615d21b3 100644
--- a/lib/child_process.js
+++ b/lib/child_process.js
@@ -337,6 +337,7 @@ function setupChannel(target, channel) {
         var message = JSON.parse(json);
 
         handleMessage(target, message, recvHandle);
+        recvHandle = undefined;
 
         start = i + 1;
       }