Raise SystemError instead of plain Exception in case of internal version inconsistency

Author: jonathandung

Lib/ctypes/__init__.py

@@ -19,7 +19,7 @@
 from struct import calcsize as _calcsize
 
 if __version__ != _ctypes_version:
-    raise Exception("Version number mismatch", __version__, _ctypes_version)
+    raise SystemError("Version number mismatch", __version__, _ctypes_version)
 
 if _os.name == "nt":
     from _ctypes import COMError, CopyComPointer, FormatError