From 4b359953229165a604f7b7ad75ca8e9394d0c25c Mon Sep 17 00:00:00 2001
From: Lukas Jakob <lu.jakob@googlemail.com>
Date: Wed, 26 Apr 2017 17:24:23 +0200
Subject: [PATCH] Save unsubscribe tag input subscription

---
 lib/components/tag-input/tag-input.component.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/components/tag-input/tag-input.component.ts b/lib/components/tag-input/tag-input.component.ts
index d1f23e7..e109eec 100644
--- a/lib/components/tag-input/tag-input.component.ts
+++ b/lib/components/tag-input/tag-input.component.ts
@@ -325,6 +325,8 @@ export class TagInputComponent implements ControlValueAccessor, OnDestroy, OnIni
   }
 
   ngOnDestroy() {
-    this.tagInputSubscription.unsubscribe();
+    if (this.tagInputSubscription) {
+      this.tagInputSubscription.unsubscribe();
+    }
   }
 }