[epiphany] gsb-service: Fix -Wmaybe-uninitialized warning

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2a2b6c7593e7b8b834afa7636d6f216b92711302
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Thu Nov 16 10:02:31 2017 -0600

    gsb-service: Fix -Wmaybe-uninitialized warning
    
    This warning seems to be dependent on optimization level or something. I
    notice it only on the SDK builder logs. Anyway, the code here frees
    uninitialized memory if msg->status_code != 200.

 lib/safe-browsing/ephy-gsb-service.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/lib/safe-browsing/ephy-gsb-service.c b/lib/safe-browsing/ephy-gsb-service.c
index 4ef2762..73f57a6 100644
--- a/lib/safe-browsing/ephy-gsb-service.c
+++ b/lib/safe-browsing/ephy-gsb-service.c
@@ -167,7 +167,7 @@ static GList *
 ephy_gsb_service_fetch_threat_lists_sync (EphyGSBService *self)
 {
   GList *retval = NULL;
-  JsonNode *body_node;
+  JsonNode *body_node = NULL;
   JsonObject *body_obj;
   JsonArray *threat_lists;
   JsonObject *descriptor;