Fix dialyzer warning

Author: acogoluegnes

src/osiris_log.erl

@@ -2889,6 +2889,8 @@ recover_tracking(Fd, Trk0, Pos0) ->
             Trk0
     end.
 
+-spec read_header0(state()) -> {ok, map(), undefined | binary(), state()} |
+                               {end_of_stream, state()}.
 read_header0(State) ->
     %% reads the next header if permitted
     case can_read_next(State) of
@@ -3136,7 +3138,8 @@ maybe_return_header(#?MODULE{cfg = #cfg{counter = CntRef},
 last_data_size(#?MODULE{mode = R = #read{}} = S, Lds) ->
     S#?MODULE{mode = R#read{last_data_size = Lds}}.
 
-update_read(#?MODULE{mode = R0} = S, ChId, NumRecords, Pos) ->
+-spec update_read(state(), offset(), offset(), non_neg_integer()) -> state().
+update_read(#?MODULE{mode = R0 = #read{}} = S, ChId, NumRecords, Pos) ->
     R = R0#read{next_offset = ChId + NumRecords,
                 position = Pos},
     S#?MODULE{mode = R}.

test/osiris_log_SUITE.erl

@@ -2042,6 +2042,7 @@ run_read_ahead_tests(Tests, RType, FSize, Wr0, Rd0) ->
                         #{w => W, r => R1, rtype => RType, fsize => FSize}
                 end, #{w => Wr0, r => Rd0, rtype => RType, fsize => FSize}, Tests).
 
+-spec update_read(map(), osiris_log:state()) -> osiris_log:state().
 update_read(#{chunk_id := ChId,
               num_records := NumRecords,
               next_position := NextPos}, R) ->