File krb5-appl-1.0-fix-ftp-var-used-uninitialized.dif of Package krb5-appl

This patch fixes an issue where variables were used uninitialized in the FTP component.

--- krb5-appl-1.0.3/ftpd/ftpd.c.orig	2023-09-01 10:00:00.000000000 +0200
+++ krb5-appl-1.0.3/ftpd/ftpd.c	2023-09-01 10:05:00.000000000 +0200
@@ -123,6 +123,7 @@
     int result;
     char buffer[1024];
 
+    memset(buffer, 0, sizeof(buffer));
     result = read(fd, buffer, sizeof(buffer));
     if (result < 0) {
         perror("read failed");