Fix i386 encoder issue Gallopsled#1761

Don't encode `avoid` parameter in `fiddler.py` if type is `bytearray`

.gitignore

@@ -13,6 +13,7 @@ MANIFEST
 dist
 venv
 .vscode
+.idea
 *.egg-info
 *.core
 .coverage

pwnlib/util/fiddling.py

@@ -370,7 +370,7 @@ def xor_pair(data, avoid = b'\x00\n'):
     if isinstance(data, six.integer_types):
         data = packing.pack(data)
 
-    if not isinstance(avoid, bytes):
+    if not (isinstance(avoid, bytes) or isinstance(avoid, bytearray)):
         avoid = avoid.encode('utf-8')
 
     avoid = bytearray(avoid)