Verify we shouldn't be running anymore after being triggered.

diff --git a/src/main/java/net/pterodactylus/xdcc/core/Core.java b/src/main/java/net/pterodactylus/xdcc/core/Core.java
index 57971f9..cce13fe 100644 (file)
--- a/src/main/java/net/pterodactylus/xdcc/core/Core.java
+++ b/src/main/java/net/pterodactylus/xdcc/core/Core.java
@@ -384,6 +384,9 @@ public class Core extends AbstractExecutionThreadService {
                                        /* ignore. */
                                }
                        }
+                       if (!isRunning()) {
+                               break;
+                       }
 
                        /* find channels that should be monitored but are not. */
                        for (Channel channel : channels) {