Refactoring to always create HTTP server

Author: jonoomph

src/windows/main_window.py

@@ -159,8 +159,7 @@ def closeEvent(self, event):
         # Close & Stop libopenshot logger
         openshot.ZmqLogger.Instance().Close()
         app.logger_libopenshot.kill()
-        if self.http_server_thread:
-            self.http_server_thread.kill()
+        self.http_server_thread.kill()
 
         # Destroy lock file
         self.destroy_lock_file()
@@ -2506,11 +2505,9 @@ def __init__(self, mode=None):
         if not self.mode == "unittest":
             self.RecoverBackup.connect(self.recover_backup)
 
-            # Initialize and start the thumbnail HTTP server
-            self.http_server_thread = httpThumbnailServerThread()
-            self.http_server_thread.start()
-        else:
-            self.http_server_thread = None
+        # Initialize and start the thumbnail HTTP server
+        self.http_server_thread = httpThumbnailServerThread()
+        self.http_server_thread.start()
 
         # Create the timeline sync object (used for previewing timeline)
         self.timeline_sync = TimelineSync(self)