[gegl] perf: update .gitignore file

[Thomas Manni <tmanni src gnome org>]

commit a3018724b40df5f96d4950d7171cc08e18befbaf
Author: Thomas Manni <thomas manni free fr>
Date:   Tue Jun 25 11:50:00 2019 +0200

    perf: update .gitignore file

 perf/.gitignore | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/perf/.gitignore b/perf/.gitignore
index 5183e6744..eb1b42cae 100644
--- a/perf/.gitignore
+++ b/perf/.gitignore
@@ -10,6 +10,7 @@
 /test-bcontrast-megachunk
 /test-bcontrast-minichunk
 /test-blur
+/test-compression
 /test-gegl-buffer-access
 /test-passthrough
 /test-rotate