[cantarell-fonts/ufo-conversion] Generate OTF with inplace instance object

[Nikolaus Waxweiler <nwaxweiler src gnome org>]

commit 8e102a1f5f8c643e23c687cc400725697c180c44
Author: Nikolaus Waxweiler <nikolaus waxweiler daltonmaag com>
Date:   Thu Mar 21 12:13:43 2019 +0000

    Generate OTF with inplace instance object

 scripts/make-static-fonts.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/scripts/make-static-fonts.py b/scripts/make-static-fonts.py
index 78570b1f..47f39187 100644
--- a/scripts/make-static-fonts.py
+++ b/scripts/make-static-fonts.py
@@ -20,10 +20,9 @@ def generate_and_write_instance(
     # 3. Generate instance UFO.
     instance = instantiator.generate_instance(instance_descriptor)
     file_stem = f"{instance.info.familyName}-{instance.info.styleName}".replace(" ", "")
-    instance.save(output_dir / f"{file_stem}.ufo")
 
     # 4. Compile and write instance OTF to disk.
-    instance_font = ufo2ft.compileOTF(instance, removeOverlaps=True)
+    instance_font = ufo2ft.compileOTF(instance, removeOverlaps=True, inplace=True)
     output_path = output_dir / f"{file_stem}.otf"
     instance_font.save(output_path)