Remove get_bits case for invalid double colon

Author: John Chadwick

protovalidate/internal/extra_func.py

@@ -548,8 +548,6 @@ def get_bits(self) -> int:
 
         # Handle double colon, fill pieces with 0
         if self._double_colon_seen:
-            if len(p16) >= 7:
-                return 0
             while len(p16) < 8:
                 # Delete 0 entries at pos, insert a 0
                 p16.insert(self._double_colon_at, 0x00000000)