Add "set -e" to chroot-scripts for better error-handling

mods/XMousePasteBlock/data/chroot

@@ -1,5 +1,5 @@
 #!/bin/bash
-set +e
+set -e
 if [[ -f "/usr/local/bin/xmousepasteblock" ]]; then
 	exit
 fi

mods/dev-remove/data/chroot

@@ -1,3 +1,4 @@
 #!/bin/bash
+set -e
 apt -y remove build-essential git pkg-config *-dev
 apt -y autoremove

mods/ksuperkey/data/chroot

@@ -1,5 +1,5 @@
 #!/bin/bash
-set +e
+set -e
 if [[ -f "/usr/local/bin/ksuperkey" ]]; then
 	exit
 fi

mods/live-installer/data/chroot

@@ -1 +1,3 @@
+#!/bin/bash
+set -e
 apt install -y --download-only cryptsetup cryptsetup-initramfs

mods/seamonkey/data/chroot

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 echo "deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main" >>"/etc/apt/sources.list"
 apt -y install dirmngr
 apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 2667CA5C