Fix statusfile used in dexpreopt

https://android-review.googlesource.com/c/platform/build/soong/+/1820496/1/scripts/manifest_check.py#361
caused a regression wrt to statusfile creation. Specifically it inverted
the logic used to create the status file. This file is used in
dexpreopt, thereby affecting all odex files

Test: In internal git, m <an_odex_file>. File size is restored to
pre-regression value
Bug: 199921980
Bug: 200329228

Change-Id: If1e61ac8e2b95455dacc6e7b9431c8f6e1f339b3

scripts/manifest_check.py

@@ -358,7 +358,7 @@ def main():
             # the check has failed.
             if args.enforce_uses_libraries_status:
                 with open(args.enforce_uses_libraries_status, 'w') as f:
-                    if not errmsg is not None:
+                    if errmsg is not None:
                         f.write('%s\n' % errmsg)
 
         if args.extract_target_sdk_version: