Update ggml layer

diff --git a/sources/ggml b/sources/ggml
index c77da9af4b222f37ecf66951c2aabec988ec3403..79fb9f8f0f82ff9b95a13f046c1f00fd78d1cbe4 160000 (submodule)
--- a/sources/ggml
+++ b/sources/ggml
@@ -1 +1 @@
-Subproject commit c77da9af4b222f37ecf66951c2aabec988ec3403
+Subproject commit 79fb9f8f0f82ff9b95a13f046c1f00fd78d1cbe4