[gnome-calculator] Update Polish translation

[Piotr Drąg <piotrdrag src gnome org>]

commit 3e1e43b410256971017db4ee700cb22b9b7f045c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jan 21 19:22:16 2018 +0100

    Update Polish translation

 help/pl/pl.po |   20 ++++++++++----------
 1 files changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/help/pl/pl.po b/help/pl/pl.po
index 92217ae..af3c7b8 100644
--- a/help/pl/pl.po
+++ b/help/pl/pl.po
@@ -1,14 +1,14 @@
 # Polish translation for gnome-calculator help.
-# Copyright © 2017 the gnome-calculator authors.
-# This file is distributed under the same license as the gnome-calculator package.
-# Piotr Drąg <piotrdrag gmail com>, 2017.
-# Aviary.pl <community-poland mozilla org>, 2017.
+# Copyright © 2017-2018 the gnome-calculator authors.
+# This file is distributed under the same license as the gnome-calculator help.
+# Piotr Drąg <piotrdrag gmail com>, 2017-2018.
+# Aviary.pl <community-poland mozilla org>, 2017-2018.
 #
 msgid ""
 msgstr ""
 "Project-Id-Version: gnome-calculator-help\n"
-"POT-Creation-Date: 2017-07-02 13:34+0000\n"
-"PO-Revision-Date: 2017-07-03 19:40+0200\n"
+"POT-Creation-Date: 2017-12-27 17:25+0000\n"
+"PO-Revision-Date: 2018-01-21 19:21+0100\n"
 "Last-Translator: Piotr Drąg <piotrdrag gmail com>\n"
 "Language-Team: Polish <community-poland mozilla org>\n"
 "Language: pl\n"
@@ -22,8 +22,8 @@ msgstr ""
 msgctxt "_"
 msgid "translator-credits"
 msgstr ""
-"Piotr Drąg <piotrdrag gmail com>, 2017\n"
-"Aviary.pl <community-poland mozilla org>, 2017"
+"Piotr Drąg <piotrdrag gmail com>, 2017-2018\n"
+"Aviary.pl <community-poland mozilla org>, 2017-2018"
 
 #. (itstool) path: page/title
 #: C/absolute.page:9
@@ -1665,8 +1665,8 @@ msgstr "Poniższe zmienne są zawsze określone."
 
 #. (itstool) path: td/p
 #: C/variables.page:40
-msgid "ans"
-msgstr "ans"
+msgid "_"
+msgstr "_"
 
 #. (itstool) path: td/p
 #: C/variables.page:41