File crypt-null-pointer.patch of Package libssh

--- libssh-0.2.orig/libssh/wrapper.c	2006-12-29 10:03:59.000000000 -0500
+++ libssh-0.2/libssh/wrapper.c	2009-09-21 13:02:41.000000000 -0400
@@ -554,12 +554,13 @@
     server=session->server_kex.methods[SSH_HOSTKEYS];
     client=session->client_kex.methods[SSH_HOSTKEYS];
     match=ssh_find_matching(client,server);
-    if(!strcmp(match,"ssh-dss"))
+    if(match && !strcmp(match,"ssh-dss"))
         session->hostkeys=TYPE_DSS;
-    else if(!strcmp(match,"ssh-rsa"))
+    else if(match && !strcmp(match,"ssh-rsa"))
         session->hostkeys=TYPE_RSA;
     else {
-        ssh_set_error(session,SSH_FATAL,"cannot know what %s is into %s",match,server);
+        ssh_set_error(session,SSH_FATAL,"cannot know what %s is into %s",
+		      match ? match : NULL ,server);
         return -1;
     }
     return 0;