[chronojump] slideNext/Prior now don't crash if Impress is not running

[Xavier de Blas <xaviblas src gnome org>]

commit 999729e82b63aa5abcbb3f1bd45223a660db9ca0
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Apr 27 22:03:30 2017 +0200

    slideNext/Prior now don't crash if Impress is not running

 testing-stuff/slideNext.sh  |   11 ++++++++---
 testing-stuff/slidePrior.sh |   10 +++++++---
 2 files changed, 15 insertions(+), 6 deletions(-)
---
diff --git a/testing-stuff/slideNext.sh b/testing-stuff/slideNext.sh
index b4fba47..14da33b 100755
--- a/testing-stuff/slideNext.sh
+++ b/testing-stuff/slideNext.sh
@@ -1,7 +1,12 @@
 #!/bin/sh
+#works when Impress is not fullscreen
 export DISPLAY=:0.0
 WINDOW=`xdotool search --name "Impress"`
 #WINDOW=52428837
-xdotool windowactivate $WINDOW
-xdotool windowfocus $WINDOW
-xdotool key Next
+if ! test -z $WINDOW
+then
+       #echo $WINDOW
+       xdotool windowactivate $WINDOW
+       xdotool windowfocus $WINDOW
+       xdotool key Next
+fi
diff --git a/testing-stuff/slidePrior.sh b/testing-stuff/slidePrior.sh
index e1d590e..60412ea 100755
--- a/testing-stuff/slidePrior.sh
+++ b/testing-stuff/slidePrior.sh
@@ -1,7 +1,11 @@
 #!/bin/sh
+#works when Impress is not fullscreen
 export DISPLAY=:0.0
 WINDOW=`xdotool search --name "Impress"`
 #WINDOW=52428837
-xdotool windowactivate $WINDOW
-xdotool windowfocus $WINDOW
-xdotool key Prior
+if ! test -z $WINDOW
+then
+       xdotool windowactivate $WINDOW
+       xdotool windowfocus $WINDOW
+       xdotool key Prior
+fi