Only create package diff if start and end exist

Issue: RELENG-798
Change-Id: I01b513073b720c7fdabf1638684af9c27eda9f8a
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>

diff --git a/shell/package-listing.sh b/shell/package-listing.sh
index 266dbbe..b2afe33 100644 (file)
--- a/shell/package-listing.sh
+++ b/shell/package-listing.sh
@@ -47,7 +47,7 @@ case "${OS_FAMILY}" in
     ;;
 esac
 
-if [ -f "${START_PACKAGES}" ]
+if ( [ -f "${START_PACKAGES}" ] && [ -f "${END_PACKAGES}" ] )
 then
     diff "${START_PACKAGES}" "${END_PACKAGES}" > "${DIFF_PACKAGES}"
 fi