Fix case clause error on tokenizer

Author: josevalim

lib/elixir/src/elixir_tokenizer.erl

@@ -794,7 +794,7 @@ handle_strings(T, Line, Column, H, Scope, Tokens) ->
               Token = {kw_identifier, {Line, Column - 1, nil}, Atom},
               tokenize(Rest, NewLine, NewColumn + 1, NewScope, [Token | Tokens]);
             {error, Reason} ->
-              {error, Reason, Rest, Tokens}
+              error(Reason, Rest, NewScope, Tokens)
           end;
 
         {ok, Unescaped} ->

lib/elixir/test/elixir/kernel/parser_test.exs

@@ -1136,7 +1136,12 @@ defmodule Kernel.ParserTest do
 
       assert_syntax_error(
         ["atom length must be less than system limit: "],
-        ~s[:"#{atom}"]
+        ~s{:"#{atom}"}
+      )
+
+      assert_syntax_error(
+        ["atom length must be less than system limit: "],
+        ~s{["#{atom}": 123]}
       )
     end
   end