Fixing a "sh: bad number" when $offset is not passed to setup_loop().

diff --git a/scripts/live-helpers b/scripts/live-helpers
index b812979..bbed909 100644 (file)
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -234,7 +234,7 @@ setup_loop ()
                                fi
                        fi
 
-                       if [ 0 -lt "${offset}" ]
+                       if [ -n "${offset}" ] && [ 0 -lt "${offset}" ]
                        then
                                options="${options} -o ${offset}"
                        fi