Stop on errors

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/scripts/bump_version.sh b/scripts/bump_version.sh
index df629e9..56270e7 100755
--- a/scripts/bump_version.sh
+++ b/scripts/bump_version.sh
@@ -24,6 +24,8 @@
 #                           [ -v | --verbose ] [ -h | --help ]
 #
 
+set -e
+
 VERSION=""
 SOVERSION=""