[gnome-keyring] test-import: Initialize error with NULL to fix segfault

[Stefan Walter <stefw src gnome org>]

commit c4957ebe3d50965373200be9940bf192cabe806c
Author: Dmitry Shachnev <mitya57 ubuntu com>
Date:   Sun Sep 6 12:17:00 2015 +0300

    test-import: Initialize error with NULL to fix segfault
    
    https://bugzilla.gnome.org/show_bug.cgi?id=731802

 pkcs11/gnome2-store/test-import.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/pkcs11/gnome2-store/test-import.c b/pkcs11/gnome2-store/test-import.c
index da0476f..31c44a6 100644
--- a/pkcs11/gnome2-store/test-import.c
+++ b/pkcs11/gnome2-store/test-import.c
@@ -132,6 +132,7 @@ test_pkcs12_import (Test *test,
        gsize length;
        GList *l;
 
+       error = NULL;
        g_file_get_contents (SRCDIR "/pkcs11/gnome2-store/fixtures/personal.p12", &contents, &length, &error);
        g_assert_no_error (error);