filter_qmp_testfiles() currently filters the filename only for specific
keys.  However, there are more keys that take filenames (such as
block-commit's @top and @base, or ssh's @path), and it does not make
sense to list them all here.  "$TEST_DIR/$PID-" should have enough
entropy not to appear anywhere randomly.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/iotests.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 3e91444b79..cca74b282d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -274,7 +274,7 @@ def filter_testfiles(msg):
 
 def filter_qmp_testfiles(qmsg):
     def _filter(key, value):
-        if key == 'filename' or key == 'backing-file':
+        if is_str(value):
             return filter_testfiles(value)
         return value
     return filter_qmp(qmsg, _filter)
-- 
2.20.1