[glib-networking] Fix typo and clarify comment

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 4da492f9390f403de99ac6eeb9c81ce78dbbe418
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Feb 28 18:49:41 2018 -0600

    Fix typo and clarify comment

 tls/gnutls/gtlsconnection-gnutls.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tls/gnutls/gtlsconnection-gnutls.c b/tls/gnutls/gtlsconnection-gnutls.c
index e5b8fca..a0d72a0 100644
--- a/tls/gnutls/gtlsconnection-gnutls.c
+++ b/tls/gnutls/gtlsconnection-gnutls.c
@@ -464,7 +464,7 @@ g_tls_connection_gnutls_finalize (GObject *object)
   g_clear_error (&priv->read_error);
   g_clear_error (&priv->write_error);
 
-  /* This must always be NULL at this, as it holds a referehce to @gnutls as
+  /* This must always be NULL here, as it holds a reference to @gnutls as
    * its source object. However, we clear it anyway just in case this changes
    * in future. */
   g_clear_object (&priv->implicit_handshake);