Avoid using default paramerers so that static analysis works better

blocking.py

@@ -783,8 +783,8 @@ def is_blocked_nickname(base_dir: str, nickname: str,
 
 def is_blocked(base_dir: str, nickname: str, domain: str,
                block_nickname: str, block_domain: str,
-               blocked_cache: [] = None,
-               block_federated: [] = None) -> bool:
+               blocked_cache: [],
+               block_federated: []) -> bool:
     """Is the given account blocked?
     """
     if is_evil(block_domain):

webapp_moderation.py

@@ -172,7 +172,8 @@ def html_account_info(translate: {},
             return ''
         follower_domain_full = get_full_domain(follower_domain, follower_port)
         if is_blocked(base_dir, nickname, domain,
-                      follower_nickname, follower_domain_full):
+                      follower_nickname, follower_domain_full,
+                      None, None):
             blocked_followers.append(follower_actor)
 
     # get a list of any blocked following
@@ -192,7 +193,8 @@ def html_account_info(translate: {},
         following_domain_full = \
             get_full_domain(following_domain, following_port)
         if is_blocked(base_dir, nickname, domain,
-                      following_nickname, following_domain_full):
+                      following_nickname, following_domain_full,
+                      None, None):
             blocked_following.append(following_actor)
 
     info_form += '<div class="accountInfoDomains">\n'

webapp_person_options.py

@@ -217,7 +217,8 @@ def html_person_options(default_timeline: str,
                                   nickname, domain,
                                   options_nickname, options_domain_full)
         if is_blocked(base_dir, nickname, domain,
-                      options_nickname, options_domain_full):
+                      options_nickname, options_domain_full,
+                      None, None):
             block_str = 'Unblock'
 
     if options_link:
@@ -335,7 +336,8 @@ def html_person_options(default_timeline: str,
             new_handle = new_nickname + '@' + new_domain
             blocked_icon_str = ''
             if is_blocked(base_dir, nickname, domain,
-                          new_nickname, new_domain, blocked_cache):
+                          new_nickname, new_domain, blocked_cache,
+                          None):
                 blocked_icon_str = '❌'
             options_str += \
                 '  <p class="optionsText">' + \

webapp_post.py

@@ -590,7 +590,7 @@ def _get_reply_icon_html(base_dir: str, nickname: str, domain: str,
             get_domain_from_actor(post_json_object['object']['replyTo'])
         if block_domain:
             if not is_blocked(base_dir, nickname, domain,
-                              block_nickname, block_domain, {}):
+                              block_nickname, block_domain, {}, None):
                 reply_to_link = post_json_object['object']['replyTo']
 
     if post_json_object['object'].get('attributedTo'):

webapp_profile.py

@@ -431,7 +431,8 @@ def html_profile_after_search(authorized: bool,
         follow_is_permitted = False
 
     blocked = \
-        is_blocked(base_dir, nickname, domain, search_nickname, search_domain)
+        is_blocked(base_dir, nickname, domain, search_nickname, search_domain,
+                   None, None)
 
     if follow_is_permitted:
         follow_str = 'Follow'