Silence non-existent/empty dir errors in fastfile_{sync,ls}

plugins/fastfile/fastfile.plugin.zsh

@@ -78,7 +78,7 @@ function fastfile_print() {
 #    (=> fastfle_print) for each shortcut
 #
 function fastfile_ls() {
-    for f in "${fastfile_dir}"/*; do
+    for f in "${fastfile_dir}"/*(NF); do
         file=`basename "$f"` # To enable simpler handeling of spaces in file names
         varkey=`echo "$file" | tr " " "_"`
 
@@ -104,7 +104,7 @@ function fastfile_rm() {
 # Generate the aliases for the shortcuts
 #
 function fastfile_sync() {
-    for f in "${fastfile_dir}"/*(N); do
+    for f in "${fastfile_dir}"/*(NF); do
         file=`basename "$f"` # To enable simpler handeling of spaces in file names
         varkey=`echo "$file" | tr " " "_"`