Update to correct head commit

Christoph Hagen · Christoph Hagen · commit 00ef855beb1d · 2018-03-02T22:18:14.000+01:00
diff --git a/libsignal-protocol-c b/libsignal-protocol-c
@@ -1 +1 @@
-Subproject commit 037eecbe985172de107170d1e526727cfe28e179
+Subproject commit 5d6e5a9bab5216451d907e59e29e2bbf37380f1a
