[empathy] Compile with --without-ca-file

[Guillaume Desmottes <gdesmott src gnome org>]

commit 92ab34517a94d36ced95514e4fdbde17b2e6004f
Author: Will Thompson <will thompson collabora co uk>
Date:   Wed Dec 8 18:59:41 2010 +0000

    Compile with --without-ca-file

 libempathy/empathy-tls-verifier.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-tls-verifier.c b/libempathy/empathy-tls-verifier.c
index ca17261..2241505 100644
--- a/libempathy/empathy-tls-verifier.c
+++ b/libempathy/empathy-tls-verifier.c
@@ -44,7 +44,9 @@ enum {
 };
 
 static const gchar* system_ca_paths[] = {
+#ifdef GTLS_SYSTEM_CA_FILE
   GTLS_SYSTEM_CA_FILE,
+#endif
   NULL,
 };