Add APP().isExiting() condition when fetching job for multi-testing

Signed-off-by: Loren Eteval <loren.eteval@proton.me>

Author: LorenEteval

Furious/Widget/UserServersQTableWidget.py

@@ -1684,7 +1684,9 @@ def handleTestDownloadSpeedJobXXX(
 
                 self.testDownloadSpeedMultiPort += 1
 
-                jobTimer.start(1)
+                if not APP().isExiting():
+                    # Fetch next job.
+                    jobTimer.start(1)
             else:
                 testDownloadSpeedPort = 20809
 
@@ -1695,8 +1697,9 @@ def handleTestDownloadSpeedJobXXX(
             if isMulti:
                 self.testDownloadSpeedMultiSema.release(1)
 
-            # Fetch next job.
-            jobTimer.start(1)
+            if not APP().isExiting():
+                # Fetch next job.
+                jobTimer.start(1)
         else:
             self.testDownloadSpeedByFactory(
                 index,