update couchbase-lite-core submodule

hideki · hideki · commit d003f9b9263a · 2018-03-12T15:22:46.000-07:00
diff --git a/libs/couchbase-lite-core b/libs/couchbase-lite-core
@@ -1 +1 @@
-Subproject commit dcd0ea8734c4ae54114f1e312bd9b5b16dfa1d49
+Subproject commit 891ca408defff75e80f29798e79bbb8f43387fb6
