tests/utils/utils.sh: use `+=` instead of expanding the same variable

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Change-Id: I2843b2629e21bb645bd793a127eeaef64110723f

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index bd077983cef48eb80a4482de5864478cce024591..acba07f9be1b378946f112973115142ba7647716 100644 (file)
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -112,7 +112,7 @@ unset -f _source_env_sh
 if [ -z "${BT_TESTS_BT2_BIN:-}" ]; then
        BT_TESTS_BT2_BIN="$BT_TESTS_BUILDDIR/../src/cli/babeltrace2"
        if [ "$BT_TESTS_OS_TYPE" = "mingw" ]; then
-               BT_TESTS_BT2_BIN="${BT_TESTS_BT2_BIN}.exe"
+               BT_TESTS_BT2_BIN+=".exe"
        fi
 fi
 export BT_TESTS_BT2_BIN