Fixed: Sending Slack notifications without an icon

src/NzbDrone.Core/Notifications/Slack/Slack.cs

@@ -115,15 +115,18 @@ namespace NzbDrone.Core.Notifications.Slack
                 Attachments = attachments
             };
 
+            if (icon.IsNotNullOrWhiteSpace())
+            {
                 // Set the correct icon based on the value
                 if (icon.StartsWith(":") && icon.EndsWith(":"))
                 {
                     payload.IconEmoji = icon;
                 }
-            else if (icon.IsNotNullOrWhiteSpace())
+                else
                 {
                     payload.IconUrl = icon;
                 }
+            }
 
             return payload;
         }