Birdtest: Fix setting TERM environment variable

diff --git a/tools/run_tests.sh b/tools/run_tests.sh
index 7f68fd3c89639d0200b70d86aae755a3ec747537..b6024832883a87420940a6a00469685614728729 100755 (executable)
--- a/tools/run_tests.sh
+++ b/tools/run_tests.sh
@@ -3,7 +3,9 @@
 objdir=$1
 srcdir=$2
 
-[ -z "$TERM" ] && TERM=xterm
+if [ -z "$TERM" ]; then
+  export TERM=xterm
+fi
 tput init
 
 # see if it supports colors...