fix struct declaration to make gcc 7.3 happy

llarp/address_info.cpp

@@ -134,7 +134,7 @@ extern "C" {
 bool
 llarp_ai_bdecode(struct llarp_ai *ai, llarp_buffer_t *buff)
 {
-  struct dict_reader reader = {.user = ai, .on_key = &llarp_ai_decode_key};
+  struct dict_reader reader = {.buffer = nullptr, .user = ai, .on_key = &llarp_ai_decode_key };
   return bdecode_read_dict(buff, &reader);
 }
 
@@ -188,6 +188,7 @@ llarp_ai_list_bencode(struct llarp_ai_list *l, llarp_buffer_t *buff)
   if(!bencode_start_list(buff))
     return false;
   struct llarp_ai_list_iter ai_itr = {.user  = buff,
+                                      .list = nullptr,
                                       .visit = &llarp_ai_list_iter_bencode};
   llarp_ai_list_iterate(l, &ai_itr);
   return bencode_end(buff);
@@ -248,7 +249,7 @@ llarp_ai_list_index(struct llarp_ai_list *l, ssize_t idx, struct llarp_ai *dst)
 bool
 llarp_ai_list_bdecode(struct llarp_ai_list *l, llarp_buffer_t *buff)
 {
-  struct list_reader r = {.user = l, .on_item = &llarp_ai_list_bdecode_item};
+  struct list_reader r = {.buffer = nullptr,.user = l, .on_item = &llarp_ai_list_bdecode_item};
   return bdecode_read_list(buff, &r);
 }
 }