Fix padding in Logger

Author: José Valim

lib/logger/lib/logger/utils.ex

@@ -258,8 +258,8 @@ defmodule Logger.Utils do
     [Integer.to_string(yy), ?-, pad2(mm), ?-, pad2(dd)]
   end
 
-  defp pad3(int) when int < 100 and int > 10, do: [?0, Integer.to_string(int)]
-  defp pad3(int) when int < 10, do: [?0, ?0, Integer.to_string(int)]
+  defp pad3(int) when int < 10,  do: [?0, ?0, Integer.to_string(int)]
+  defp pad3(int) when int < 100, do: [?0, Integer.to_string(int)]
   defp pad3(int), do: Integer.to_string(int)
 
   defp pad2(int) when int < 10, do: [?0, Integer.to_string(int)]

lib/logger/test/logger/utils_test.exs

@@ -92,5 +92,8 @@ defmodule Logger.UtilsTest do
   test "format_time" do
     time = {12, 30, 10, 1}
     assert format_time(time) == ["12", ?:, "30", ?:, "10", ?., [?0, ?0, "1"]]
+
+    time = {12, 30, 10, 10}
+    assert format_time(time) == ["12", ?:, "30", ?:, "10", ?., [?0, "10"]]
   end
 end