Make sure to use the correct calling convention

mattleibow · mattleibow · commit 78d806aa9e04 · 2018-10-19T21:07:30.000+02:00
diff --git a/externals/skia b/externals/skia
@@ -1 +1 @@
-Subproject commit 9ec6cb29f41014890f61ed1329fc934bfd9167ae
+Subproject commit 55abe22df6b281c041c3da672f498dc8396bc586
