fix error when glob matches nothing (variable 'file' will have the gl…

…ob as a value in the for loop and produce the error "mv: cannot stat '/home/user-data/ssl/*-+([0-9])-+([0-9a-f]).pem': No such file or directory")

tools/ssl_cleanup

@@ -7,7 +7,8 @@ shopt -s extglob
 retain_after="$(date --date="7 days ago" +%Y%m%d)"
 
 mkdir -p $STORAGE_ROOT/ssl.expired
-for file in $STORAGE_ROOT/ssl/*-+([0-9])-+([0-9a-f]).pem; do
+ls $STORAGE_ROOT/ssl/*-+([0-9])-+([0-9a-f]).pem 2>/dev/null | while read file
+do
   pem="$(basename "$file")"
   not_valid_after="$(cut -d- -f1 <<< "${pem: -21}")"