From 85d2c38b78407e5b1ba42140dfd11fcdf8df1edf Mon Sep 17 00:00:00 2001
From: Henri Menke <henri@henrimenke.de>
Date: Wed, 11 Aug 2021 22:07:19 +0200
Subject: [PATCH] Only clearpage and flush \pgfutil@everybye if non-empty #724

---
 tex/generic/pgf/utilities/pgfutil-latex.def | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tex/generic/pgf/utilities/pgfutil-latex.def b/tex/generic/pgf/utilities/pgfutil-latex.def
index 07a7fb1a4..e88cfb942 100644
--- a/tex/generic/pgf/utilities/pgfutil-latex.def
+++ b/tex/generic/pgf/utilities/pgfutil-latex.def
@@ -90,7 +90,10 @@
 
 \def\pgfutil@check@rerun#1#2{\@newl@bel{pgf@lab}{#1}{#2}}
 
-\AtBeginDocument{\AtEndDocument{\clearpage\the\pgfutil@everybye}}
+\AtBeginDocument{\AtEndDocument{%
+    \if\relax\detokenize\expandafter{\the\pgfutil@everybye}\relax\else
+        \expandafter\clearpage\expandafter\the\expandafter\pgfutil@everybye
+    \fi}}
 
 % \@ifl@t@r is defined \@onlypremable so we have to save it here
 \let\pgfutil@ifl@t@r=\@ifl@t@r