[tracker] tests: Fix invalid call to tracker_getline in libtracker-extract test

[Sam Thursfield <sthursfield src gnome org>]

commit 723b393b67b44479b28cf182834b91c06a01cb2c
Author: Sam Thursfield <sam afuera me uk>
Date:   Sun Oct 30 18:50:15 2016 +0000

    tests: Fix invalid call to tracker_getline in libtracker-extract test
    
    The test passes when used with glibc's getline(), but the fallback
    implementation we ship will return EINVAL if the size pointer is not set
    to zero before the call. The man page suggests that this is valid
    behaviour for a getline() implementation, so let's fix the test.

 tests/libtracker-extract/tracker-test-utils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/libtracker-extract/tracker-test-utils.c b/tests/libtracker-extract/tracker-test-utils.c
index fce4643..33cd685 100644
--- a/tests/libtracker-extract/tracker-test-utils.c
+++ b/tests/libtracker-extract/tracker-test-utils.c
@@ -263,7 +263,7 @@ test_getline (void)
 {
         FILE *f;
         gchar *line = NULL;
-        gsize  n;
+        gsize  n = 0;
  
         f = fopen (TOP_SRCDIR "/tests/libtracker-extract/getline-test.txt", "r");
         g_assert_cmpint (tracker_getline (&line, &n, f), >, 0);