mtest.sh: fix invalid variable name

This was causing invalid error message when mt_fail is run

Signed-off-by: Michał Łyszczek <michal.lyszczek@redembedded.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/mtest.sh b/mtest.sh
index a87b753..41c3662 100755
--- a/mtest.sh
+++ b/mtest.sh
@@ -132,7 +132,7 @@ mt_run_named()
 
 mt_fail()
 {
-	error_msg="$1"
+	err_msg="$1"
 	if [ $# -eq 2 ]; then
 		err_msg="$2"
 	fi