Minor refactor

src/protodec.cr

@@ -55,7 +55,7 @@ struct VarLong
   end
 end
 
-class ProtoBuf
+struct ProtoBuf::Any
   enum Tag
     VarInt          = 0
     Bit64           = 1
@@ -63,9 +63,8 @@ class ProtoBuf
     Bit32           = 5
   end
 
-  struct Any
   alias Type = Int64 |
-                 Array(UInt8) |
+               Bytes |
                String |
                Hash(Int32, Type)
 
@@ -93,7 +92,6 @@ class ProtoBuf
         when Tag::Bit64
           value = Bytes.new(8)
           io.read_fully(value)
-            value = value.to_a
         when Tag::LengthDelimited
           bytes = Bytes.new(io.read_bytes(VarLong))
           io.read_fully(bytes)
@@ -110,7 +108,7 @@ class ProtoBuf
                 begin
                   value = from_io(IO::Memory.new(bytes)).raw
                 rescue ex
-                    value = bytes.to_a
+                  value = bytes
                 end
               end
             end
@@ -118,7 +116,6 @@ class ProtoBuf
         when Tag::Bit32
           value = Bytes.new(4)
           io.read_fully(value)
-            value = value.to_a
         else
           break if ignore_exceptions
           raise "Invalid type #{type}"
@@ -139,7 +136,6 @@ class ProtoBuf
       raise "Expected Hash for #[]=(key : Int32, value : Type), not #{object.class}"
     end
   end
-  end
 end
 
 enum InputType