fix a bug when you add a contact after edition

The number variable was already used so it is not empty where we need it
to be.

Signed-off-by: Stacy Harper <contact@stacyharper.net>
Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

scripts/core/sxmo_contactmenu.sh

@@ -16,6 +16,7 @@ valid_number() {
 
 newcontact() {
 	name="$(echo | sxmo_dmenu_with_kb.sh -c -l 2 -p "$icon_usr Name")"
+	number=
 	while [ -z "$number" ]; do
 		number="$(echo | sxmo_dmenu_with_kb.sh -c -l 2 -p "$icon_phl Number")"
 		number="$(valid_number "$number")"