core: replace set -e by set -o errexit in shell scripts

tools/build_debian.sh

@@ -53,8 +53,7 @@
 #                   (numeric or "auto" for dpkg >= 1.17.10)
 #
 
-# exit on any error
-set -e
+set -o errexit
 
 # default values for options from environment variables
 DEFAULT_PACKAGER_NAME="Sébastien Helleu"

tools/build_test.sh

@@ -31,8 +31,7 @@
 # This script is used to build WeeChat in CI environment.
 #
 
-# exit on any error
-set -e
+set -o errexit
 
 BUILDDIR="build-tmp-$$"
 

tools/check_scripts.sh

@@ -24,8 +24,7 @@
 #  - Python scripts: flake8 + pylint + bandit
 #
 
-# exit on any error
-set -e
+set -o errexit
 
 # check git repository
 ROOT_DIR=$(git rev-parse --show-toplevel)

tools/makedist.sh

@@ -33,8 +33,7 @@
 #             defaults to current directory
 #
 
-# exit on any error
-set -e
+set -o errexit
 
 error ()
 {