[ostree] [staticanalysis]: Fix two uses of uninitialized variables

[Colin Walters <walters src gnome org>]

commit d7067975e7beb60a0a3d30fe668952def3d61775
Author: Colin Walters <walters verbum org>
Date:   Sat Jun 21 17:22:55 2014 -0400

    [staticanalysis]: Fix two uses of uninitialized variables
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732020

 src/libostree/ostree-repo-traverse.c |    2 +-
 src/libostree/ostree-repo.c          |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libostree/ostree-repo-traverse.c b/src/libostree/ostree-repo-traverse.c
index 758c233..55b9174 100644
--- a/src/libostree/ostree-repo-traverse.c
+++ b/src/libostree/ostree-repo-traverse.c
@@ -244,7 +244,7 @@ ostree_repo_traverse_commit (OstreeRepo      *repo,
                              GCancellable    *cancellable,
                              GError         **error)
 {
-  gboolean ret;
+  gboolean ret = FALSE;
   gs_unref_hashtable GHashTable *ret_reachable =
     ostree_repo_traverse_new_reachable ();
 
diff --git a/src/libostree/ostree-repo.c b/src/libostree/ostree-repo.c
index 45d0fbc..5676664 100644
--- a/src/libostree/ostree-repo.c
+++ b/src/libostree/ostree-repo.c
@@ -1888,7 +1888,7 @@ ostree_repo_sign_commit (OstreeRepo     *self,
   gs_unref_object GOutputStream *tmp_signature_output = NULL;
   gs_unref_variant GVariant *commit_variant = NULL;
   gs_unref_bytes GBytes *signature_bytes = NULL;
-  gpgme_ctx_t context;
+  gpgme_ctx_t context = NULL;
   gpgme_engine_info_t info;
   gpgme_error_t err;
   gpgme_key_t key = NULL;