Test if ticker still exist before printing and flushing progress bar …

…on tick.
gosuri · May 24, 2016 · a4d347a · a4d347a
1 parent 528664d
commit a4d347a
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/progress.go b/progress.go
@@ -91,8 +91,12 @@ func (p *Progress) Listen() {
 		select {
 		case <-p.ticker.C:
 			p.mtx.RLock()
-			p.print()
-			p.lw.Flush()
+
+			if p.ticker != nil {
+				p.print()
+				p.lw.Flush()
+			}
+
 			p.mtx.RUnlock()
 		case <-p.tdone:
 			p.ticker.Stop()