chg: Always make sure the lock file is removed even if building the tree fails

lookyloo/lookyloo.py

@@ -194,7 +194,7 @@ class Lookyloo():
             raise NoValidHarFile(e.message)
         except RecursionError as e:
             raise NoValidHarFile(f'Tree too deep, probably a recursive refresh: {e}.\n Append /export to the URL to get the files.')
-
+        else:
             with pickle_file.open('wb') as _p:
                 # Some pickles require a pretty high recursion limit, this kindof fixes it.
                 # If the capture is really broken (generally a refresh to self), the capture
@@ -203,6 +203,7 @@ class Lookyloo():
                 sys.setrecursionlimit(int(default_recursion_limit * 1.1))
                 pickle.dump(ct, _p)
                 sys.setrecursionlimit(default_recursion_limit)
+        finally:
             lock_file.unlink(missing_ok=True)
         return ct