[cli] Fix double-click check breaking macOS/Linux execution

By always trying to import windows_helpers and thus winreg on
non-Windows things would break.

legendary/cli.py

@@ -28,7 +28,6 @@
 from legendary.utils.eos import add_registry_entries, query_registry_entries, remove_registry_entries
 from legendary.utils.lfs import validate_files, clean_filename
 from legendary.utils.selective_dl import get_sdl_appname
-from legendary.utils.windows_helpers import double_clicked
 from legendary.utils.wine_helpers import read_registry, get_shell_folders
 
 # todo custom formatter for cli logger (clean info, highlighted error/warning)
@@ -2925,10 +2924,12 @@ def main():
                     continue
                 print(f'\nCommand: {choice}')
                 print(subparser.format_help())
-        elif os.name == 'nt' and double_clicked():
-            print('Please note that this is not the intended way to run Legendary.')
-            print('Follow https://github.com/derrod/legendary/wiki/Setup-Instructions to set it up properly')
-            subprocess.Popen(['cmd', '/K', 'echo>nul'])
+        elif os.name == 'nt':
+            from legendary.utils.windows_helpers import double_clicked
+            if double_clicked():
+                print('Please note that this is not the intended way to run Legendary.')
+                print('Follow https://github.com/derrod/legendary/wiki/Setup-Instructions to set it up properly')
+                subprocess.Popen(['cmd', '/K', 'echo>nul'])
         return
 
     cli = LegendaryCLI(override_config=args.config_file, api_timeout=args.api_timeout)