Update choosepkg and chooseaurpg return value

lib

@@ -84,13 +84,13 @@ choosepkg(){
     "${options[@]}" \
     3>&1 1>&2 2>&3)
   if [ ! "$?" = "0" ]; then
-    exit 1
+    return 1
   fi
   for itm in $sel; do
     pkg="$pkg $(echo $itm | sed 's/"//g')"
   done
   instpkg "$pkg" "$aurpkg"
-  exit 0
+  return 0
 }
 
 
@@ -117,13 +117,13 @@ chooseaurpkg(){
     "${options[@]}" \
     3>&1 1>&2 2>&3)
   if [ ! "$?" = "0" ]; then
-    exit 1
+    return 1
   fi
   for itm in $sel; do
     aurpkg="$aurpkg $(echo $itm | sed 's/"//g')"
   done
   instpkg "$pkg" "$aurpkg"
-  exit 0
+  return 0
 }