Merge pull request #276 from resouer/fix-fd

Fix controlPipe is not closed

runtime/process.go

@@ -211,7 +211,11 @@ func (p *process) Stdio() Stdio {
 
 // Close closes any open files and/or resouces on the process
 func (p *process) Close() error {
-	return p.exitPipe.Close()
+	err := p.exitPipe.Close()
+	if cerr := p.controlPipe.Close(); err == nil {
+		err = cerr
+	}
+	return err
 }
 
 func (p *process) State() State {