Only range over the channels if it is not nil

orivej · Jun 6, 2013 · 7f922c9 · 7f922c9
1 parent a69167d
commit 7f922c9
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/basic_runner.go b/basic_runner.go
@@ -30,8 +30,10 @@ func (b *BasicRunner) Run(state map[string]interface{}) {
 		b.l.Lock()
 		defer b.l.Unlock()
 
-		for _, doneCh := range b.cancelChs {
-			doneCh <- true
+		if b.cancelChs != nil {
+			for _, doneCh := range b.cancelChs {
+				doneCh <- true
+			}
 		}
 
 		b.running = false