Avoid crash in env.c/host_fqdn if we cannot canonicalize our own hostname.

Reported by Alexander Holler.

svn path=/branches/BRANCH_6-3/; revision=4908

1 files changed, 1 insertions, 1 deletions

diff --git a/env.c b/env.c
index 9b9e608c..f9a3bf9a 100644
--- a/env.c
+++ b/env.c
@@ -176,7 +176,7 @@ char *host_fqdn(int required)
 	    }
 	}
 
-	result = xstrdup(res->ai_canonname);
+	result = xstrdup(res->ai_canonname ? res->ai_canonname : tmpbuf);
 	fm_freeaddrinfo(res);
     }
     else