reorder values

post_dict is more likely to be a thing
diff --git a/aardvark.py b/aardvark.py
index 9f60f81..5850c3a 100644
--- a/aardvark.py
+++ b/aardvark.py
@@ -224,7 +224,7 @@
                     target_url,
                     headers=req_headers,
                     params=get_data,
-                    data=post_data or post_dict,
+                    data=post_dict or post_data,
                     timeout=30,
                 ) as resp:
                     result = resp