Don't print uninitialized buffer in ssl_mail_client
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index e44af85..4f3124f 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -352,7 +352,7 @@
 int main( int argc, char *argv[] )
 {
     int ret = 0, len, server_fd;
-    unsigned char buf[1024];
+    unsigned char buf[1024] = { 0 };
 #if defined(POLARSSL_BASE64_C)
     unsigned char base[1024];
 #endif