[tracker-miners] tests: Add assert around g_file_set_contents() call

[Carlos Garnacho <carlosg src gnome org>]

commit 3921eb680e2b655d2c77965795c6b6c319c24888
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Sep 25 17:46:42 2017 +0200

    tests: Add assert around g_file_set_contents() call
    
    Spotted through coverity (CID: #162189)

 tests/libtracker-common/tracker-file-utils-test.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/libtracker-common/tracker-file-utils-test.c 
b/tests/libtracker-common/tracker-file-utils-test.c
index bff696a..a7722ba 100644
--- a/tests/libtracker-common/tracker-file-utils-test.c
+++ b/tests/libtracker-common/tracker-file-utils-test.c
@@ -41,7 +41,7 @@ ensure_file_exists (const gchar *filename)
         g_autoptr(GError) error = NULL;
 
         if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
-                g_file_set_contents (filename, "Just some stuff", -1, &error);
+                g_assert (g_file_set_contents (filename, "Just some stuff", -1, &error) == TRUE);
                 g_assert_no_error (error);
         }
 }