From: Tim Kosse <tim.kosse@filezilla-project.org>
Date: Tue, 11 Aug 2015 11:45:26 +0000 (+0200)
Subject: Detect end of string in fingerprint alignment.
X-Git-Tag: 0.68~476
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=fe210692fd0699e91d0194b44dc5faf278d90093;p=PuTTY.git

Detect end of string in fingerprint alignment.

This prevents writing past the end of the buffer should
ssh2_fingerprint ever return a fingerprint not containing a colon.
---

diff --git a/windows/winpgnt.c b/windows/winpgnt.c
index 58b5af70..e9d91e3d 100644
--- a/windows/winpgnt.c
+++ b/windows/winpgnt.c
@@ -304,7 +304,7 @@ void keylist_update(void)
             pos = 0;
             while (1) {
                 pos += strcspn(listentry + pos, " :");
-                if (listentry[pos] == ':')
+                if (listentry[pos] == ':' || !listentry[pos])
                     break;
                 listentry[pos++] = '\t';
             }