[at-spi2-atk: 1/2] cache-adaptor: Fix crash when no toolkit name is set

[Mike Gorse <mgorse src gnome org>]

commit e84fdbe454d4e2e9b6202ce140e167a00705c64e
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Tue Aug 27 01:07:22 2019 +0200

    cache-adaptor: Fix crash when no toolkit name is set
    
    atk_get_toolkit_name may return NULL when e.g. running the pyatspi2 test
    suite.  Callers of get_toolkit_name expect a non-NULL value (passed to
    strcmp), so return a default string.

 atk-adaptor/adaptors/cache-adaptor.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/atk-adaptor/adaptors/cache-adaptor.c b/atk-adaptor/adaptors/cache-adaptor.c
index cd93609..c2a6de9 100644
--- a/atk-adaptor/adaptors/cache-adaptor.c
+++ b/atk-adaptor/adaptors/cache-adaptor.c
@@ -70,6 +70,9 @@ get_toolkit_name (AtkObject *obj)
   if (!toolkit_name)
     toolkit_name = atk_get_toolkit_name ();
 
+  if (!toolkit_name)
+    return "no toolkit name set yet";
+
   /* TODO: query object attributes */
   return toolkit_name;
 }