Changed who_am_i() to output "server" or "client" when am_sender

is negative.  This will only occur during the startup phase
before we know if we're the sender or not (e.g. when parsing
client-side --filter/--exclude/--include options).

rsync.c

@@ -27,6 +27,7 @@ extern int dry_run;
 extern int preserve_times;
 extern int omit_dir_times;
 extern int am_root;
+extern int am_server;
 extern int am_sender;
 extern int am_generator;
 extern int preserve_uid;
@@ -299,5 +300,7 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
 
 const char *who_am_i(void)
 {
+	if (am_sender < 0)
+		return am_server ? "server" : "client";
 	return am_sender ? "sender" : am_generator ? "generator" : "receiver";
 }