fix xastir update check

update

@@ -447,6 +447,10 @@ CHECK() {
 	#----------------------------------------------------#
 	#		XASTIR
 	#----------------------------------------------------#
+	echo "Checking Xastir"
+	if ! hash xastir 2>/dev/null; then
+	XASTIR="Not_Installed"
+	else
 	LATESTXAS=$(curl -s https://github.com/Xastir/Xastir | grep Release- | head -1 | sed 's/.*Release-//;s/">//')
 	CURRENTXAS=$(xastir -V | sed 's/Xastir V//;s/(.*//;/^\s*$/d')
 
@@ -455,6 +459,7 @@ CHECK() {
 		else
 			XASTIR="is_latest_version"
 		fi
+	fi
 
 	#----------------------------------------------------#
 	#		YAAC