Correct exit code if number of errors % 256 == 0

For example, we had 256 errors (etc.) our process will exit with a
successful error code which is incorrect and/or misleading.

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/swig/test/testArray.py b/tools/swig/test/testArray.py
index 2ccca19b4..8d9c79772 100755
--- a/tools/swig/test/testArray.py
+++ b/tools/swig/test/testArray.py
@@ -382,4 +382,4 @@ if __name__ == "__main__":
     print("NumPy version", np.__version__)
     print()
     result = unittest.TextTestRunner(verbosity=2).run(suite)
-    sys.exit(len(result.errors) + len(result.failures))
+    sys.exit(bool(result.errors + result.failures))