[tracker/sam/tracker-2.3-developer-experience: 41/45] utils/trackertestutils: Fix broken PATH and LD_LIBRARY_PATH

[Sam Thursfield <sthursfield src gnome org>]

commit 2b5ca7110ea2e7a133ed8f587b50263a92b17aee
Author: Sam Thursfield <sam afuera me uk>
Date:   Sat Sep 28 14:40:54 2019 +0200

    utils/trackertestutils: Fix broken PATH and LD_LIBRARY_PATH
    
    This fixes a regression from b68cef0297254aac79c which caused us to
    remove the existing PATH when --prefix was used.

 utils/trackertestutils/__main__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/utils/trackertestutils/__main__.py b/utils/trackertestutils/__main__.py
index 0b7b3daba..9828e102f 100644
--- a/utils/trackertestutils/__main__.py
+++ b/utils/trackertestutils/__main__.py
@@ -106,8 +106,8 @@ def environment_unset(dbus):
 def environment_set_and_add_path(env, var, prefix, suffix):
     new = os.path.join(prefix, suffix)
 
-    if var in env:
-        existing = env[var]
+    if var in os.environ:
+        existing = os.environ[var]
         full = '%s:%s' % (new, existing)
     else:
         full = new