Fix regex after https://chromium-review.googlesource.com/c/chromium/src/+/1213525

I meant '\s*', not '\w*'. Also remove a \b that has no effect.

TBR=tikuta

Bug: 330263
Change-Id: I91595cf10c67281ebc023d66bddfd940b85f6381
Reviewed-on: https://chromium-review.googlesource.com/1214629Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589802}

tools/determinism/compare_build_artifacts.py

@@ -267,7 +267,7 @@ def compare_build_artifacts(first_dir, second_dir, ninja_path, target_platform,
   with open(os.path.join(BASE_DIR, 'deterministic_build_whitelist.pyl')) as f:
     raw_whitelist = ast.literal_eval(f.read())
     whitelist_list = raw_whitelist[target_platform]
-    if re.search(r'\bis_component_build\b\w*=\w*true\b',
+    if re.search(r'\bis_component_build\s*=\s*true\b',
                  open(os.path.join(first_dir, 'args.gn')).read()):
       whitelist_list += raw_whitelist.get(target_platform + '_component', [])
     whitelist = frozenset(whitelist_list)