Import missing WolfCryptError in init

Author: JeremiahM37

wolfcrypt/__init__.py

@@ -46,6 +46,7 @@
 if top_level_py not in ["setup.py", "build_ffi.py"]:
     from wolfcrypt._ffi import ffi as _ffi
     from wolfcrypt._ffi import lib as _lib
+    from wolfcrypt.exceptions import WolfCryptError
 
     if hasattr(_lib, 'WC_RNG_SEED_CB_ENABLED'):
         if _lib.WC_RNG_SEED_CB_ENABLED: