Description: fix FTBFS due to -Werror=implicit-function-declaration
Index: lprng/src/auth/krb5_auth.c
===================================================================
--- lprng.orig/src/auth/krb5_auth.c	2024-03-16 10:46:57.814445644 +0100
+++ lprng/src/auth/krb5_auth.c	2024-03-16 10:56:41.299649472 +0100
@@ -52,6 +52,8 @@
 # endif
 
 # ifdef HAVE_KRB5_READ_MESSAGE
+krb5_error_code krb5_read_message( krb5_context context, krb5_pointer fdp, krb5_data *inbuf );
+krb5_error_code krb5_write_message( krb5_context context, krb5_pointer fdp, krb5_data *outbuf );
 #  define read_message krb5_read_message
 #  define write_message krb5_write_message
 # else