[tracker] docs: Fix typo in examples

[Carlos Garnacho <carlosg src gnome org>]

commit c74d348700bc26d5d4201d43a7cdbc73e4800252
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Sep 15 22:59:04 2020 +0200

    docs: Fix typo in examples
    
    The error checks are the wrong way around. Introduced in commits f8282a29e5
    and 87e189d5a0. Spotted again by coverity.

 docs/reference/libtracker-sparql/examples/writeonly-example.c           | 2 +-
 .../libtracker-sparql/examples/writeonly-with-blank-nodes-example.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/docs/reference/libtracker-sparql/examples/writeonly-example.c 
b/docs/reference/libtracker-sparql/examples/writeonly-example.c
index 94104c3d7..6a08b6adc 100644
--- a/docs/reference/libtracker-sparql/examples/writeonly-example.c
+++ b/docs/reference/libtracker-sparql/examples/writeonly-example.c
@@ -17,7 +17,7 @@ int main (int argc, const char **argv)
     "}";
 
   connection = tracker_sparql_connection_bus_new ("org.freedesktop.Tracker3.Miner.Files", NULL, NULL, 
&error);
-  if (!error) {
+  if (error) {
     g_printerr ("Couldn't obtain a connection to the Tracker store: %s",
                 error->message);
     g_clear_error (&error);
diff --git a/docs/reference/libtracker-sparql/examples/writeonly-with-blank-nodes-example.c 
b/docs/reference/libtracker-sparql/examples/writeonly-with-blank-nodes-example.c
index 558c7e55d..49a839243 100644
--- a/docs/reference/libtracker-sparql/examples/writeonly-with-blank-nodes-example.c
+++ b/docs/reference/libtracker-sparql/examples/writeonly-with-blank-nodes-example.c
@@ -9,7 +9,7 @@ int main (int argc, const char **argv)
     "INSERT { _:foo a nie:InformationElement } WHERE { ?x a rdfs:Class }";
 
   connection = tracker_sparql_connection_bus_new ("org.freedesktop.Tracker1", NULL, NULL, &error);
-  if (!error) {
+  if (error) {
     g_printerr ("Couldn't obtain a connection to the Tracker store: %s",
                 error->message);
     g_clear_error (&error);