BaseTools: Fix Debug Macro Checking to Include Scanning Files

- In the commit 42a1418
  there was a misuse of "is_dir" method.

- Treating it as an object rather than function call,
  which caused if-condition to always as "false".

- No files would be added to scanning list due to incorrect usage.

- This patch corrects the issue by properly using "is_dir()".

Signed-off-by: Jason1 Lin <[email protected]>

Author: linjaso1

BaseTools/Plugin/DebugMacroCheck/DebugMacroCheck.py

@@ -429,7 +429,7 @@ def _show_file_discovered_message(file_count: int,
 
         files = []
         for file in root_directory.rglob('*'):
-            if file.suffix in extensions and not file.is_dir:
+            if file.suffix in extensions and not file.is_dir():
                 files.append(Path(file))
 
             # Give an indicator progress is being made