install-deps.sh: fix an error condition expression

Signed-off-by: Yao Guotao <yaoguot@gmail.com>

diff --git a/install-deps.sh b/install-deps.sh
index 30828559166c673948e090fbd57c00e7ef1a3efc..c9d185b20471b115b50fc1fb6d6fa38990eec62f 100755 (executable)
--- a/install-deps.sh
+++ b/install-deps.sh
@@ -315,7 +315,7 @@ else
         esac
         munge_ceph_spec_in $DIR/ceph.spec
         $SUDO $builddepcmd $DIR/ceph.spec 2>&1 | tee $DIR/yum-builddep.out
-       if [ -n dts_ver ]; then
+       if [ -n "$dts_ver" ]; then
             ensure_decent_gcc_on_rh $dts_ver
        fi
         ! grep -q -i error: $DIR/yum-builddep.out || exit 1