[tracker-miners] Fix a couple of 'value may be uninitialized' warnings

[Sam Thursfield <sthursfield src gnome org>]

commit 83a361c252f04855255797bd6438c95611c63766
Author: Sam Thursfield <sam afuera me uk>
Date:   Mon Aug 24 16:51:52 2020 +0200

    Fix a couple of 'value may be uninitialized' warnings

 src/tracker-extract/tracker-extract-ps.c | 2 +-
 src/tracker/tracker-miner-manager.c      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-ps.c b/src/tracker-extract/tracker-extract-ps.c
index 513c70a02..02eadbef4 100644
--- a/src/tracker-extract/tracker-extract-ps.c
+++ b/src/tracker-extract/tracker-extract-ps.c
@@ -186,7 +186,7 @@ static TrackerResource *
 extract_ps_gz (const gchar *uri)
 {
        g_autoptr(GFile) file = NULL;
-       g_autoptr(GInputStream) stream, cstream = NULL;
+       g_autoptr(GInputStream) stream = NULL, cstream = NULL;
        g_autoptr(GConverter) converter = NULL;
        g_autoptr(GError) error = NULL;
 
diff --git a/src/tracker/tracker-miner-manager.c b/src/tracker/tracker-miner-manager.c
index c8808cbc7..c62716395 100644
--- a/src/tracker/tracker-miner-manager.c
+++ b/src/tracker/tracker-miner-manager.c
@@ -1591,7 +1591,7 @@ tracker_miner_manager_index_location_async (TrackerMinerManager        *manager,
                                             gpointer                    user_data)
 {
        IndexLocationTaskData *data;
-       g_autoptr (GTask) task;
+       g_autoptr (GTask) task = NULL;
 
        data = index_location_task_data_new (location, graphs, flags);
        task = g_task_new (manager, cancellable, callback, user_data);