[PJLink] forget threadpool after it was shutdown (#16119)

This is an issue if the user cancels/restarts discovery scans, new tasks were added to the shutdown threadpool.
With this PR, a new threadpool will be created on the next scan in getExecutorService().

Signed-off-by: Nils Schnabel <github@to.nilsschnabel.de>

diff --git a/bundles/org.openhab.binding.pjlinkdevice/src/main/java/org/openhab/binding/pjlinkdevice/internal/discovery/AbstractDiscoveryParticipant.java b/bundles/org.openhab.binding.pjlinkdevice/src/main/java/org/openhab/binding/pjlinkdevice/internal/discovery/AbstractDiscoveryParticipant.java
index 1e9effbdc0d0241450a6589325e0306eb890ab5b..2d9f09e8330ce4ef8f4095c73dfad275ead93cd1 100644 (file)
--- a/bundles/org.openhab.binding.pjlinkdevice/src/main/java/org/openhab/binding/pjlinkdevice/internal/discovery/AbstractDiscoveryParticipant.java
+++ b/bundles/org.openhab.binding.pjlinkdevice/src/main/java/org/openhab/binding/pjlinkdevice/internal/discovery/AbstractDiscoveryParticipant.java
@@ -97,6 +97,7 @@ public abstract class AbstractDiscoveryParticipant extends AbstractDiscoveryServ
             Thread.currentThread().interrupt(); // Reset interrupt flag
         }
         executorService.shutdown();
+        this.executorService = null;
     }
 
     public static ThingUID createServiceUID(String ip, int tcpPort) {