Fix up lock handling in hgweb_config_manager

lib/tool_shed/util/hgweb_config.py

@@ -19,11 +19,11 @@ class HgWebConfigManager:
     def __init__(self):
         self.hgweb_config_dir = None
         self.in_memory_config = None
+        self.lock = threading.Lock()
 
     def add_entry(self, lhs, rhs):
         """Add an entry in the hgweb.config file for a new repository."""
-        lock = threading.Lock()
-        lock.acquire(True)
+        self.lock.acquire(True)
         try:
             # Since we're changing the config, make sure the latest is loaded into memory.
             self.read_config(force_read=True)
@@ -38,12 +38,11 @@ def add_entry(self, lhs, rhs):
         except Exception as e:
             log.debug("Exception in HgWebConfigManager.add_entry(): %s", unicodify(e))
         finally:
-            lock.release()
+            self.lock.release()
 
     def change_entry(self, old_lhs, new_lhs, new_rhs):
         """Change an entry in the hgweb.config file for a repository - this only happens when the owner changes the name of the repository."""
-        lock = threading.Lock()
-        lock.acquire(True)
+        self.lock.acquire(True)
         try:
             self.make_backup()
             # Remove the old entry.
@@ -55,7 +54,7 @@ def change_entry(self, old_lhs, new_lhs, new_rhs):
         except Exception as e:
             log.debug("Exception in HgWebConfigManager.change_entry(): %s", unicodify(e))
         finally:
-            lock.release()
+            self.lock.release()
 
     def get_entry(self, lhs):
         """Return an entry in the hgweb.config file for a repository"""