Fix possible buffer overflows (given we're copying to storage of AFP_MAX_PATH,
while AFP_MAX_PATH is much smaller than PATH_MAX)

Lubomir Rintel <lkundrak@v3.sk>

--- afpfs-ng-0.8.1/cmdline/cmdline_afp.c.overflows	2008-10-06 19:21:32.000000000 +0200
+++ afpfs-ng-0.8.1/cmdline/cmdline_afp.c	2008-10-06 19:13:50.000000000 +0200
@@ -129,9 +129,9 @@
 {
 	if (filename[0]!='/') {
 		if (strlen(curdir)==1) 
-			snprintf(server_fullname,PATH_MAX,"/%s",filename);
+			snprintf(server_fullname,AFP_MAX_PATH,"/%s",filename);
 		else
-			snprintf(server_fullname,PATH_MAX,"%s/%s",curdir,filename);
+			snprintf(server_fullname,AFP_MAX_PATH,"%s/%s",curdir,filename);
 	} else {
 		snprintf(server_fullname,PATH_MAX,"%s",filename);
 	}
@@ -1217,7 +1217,7 @@
 {
 	struct passwd * passwd;
 
-	snprintf(curdir,PATH_MAX,"%s",DEFAULT_DIRECTORY);
+	snprintf(curdir,AFP_MAX_PATH,"%s",DEFAULT_DIRECTORY);
 	if (init_uams()<0) return -1;
 
 	afp_default_url(&url);