From cca16b459f008f4bfa3189ed27296fe981abbd1f Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Tue, 24 Oct 2017 11:46:45 -0700
Subject: [PATCH] [core] Add layer before notifying observer

---
 src/mbgl/style/style_impl.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mbgl/style/style_impl.cpp b/src/mbgl/style/style_impl.cpp
index 37907d3f602..3214c6316e4 100644
--- a/src/mbgl/style/style_impl.cpp
+++ b/src/mbgl/style/style_impl.cpp
@@ -204,9 +204,10 @@ Layer* Style::Impl::addLayer(std::unique_ptr<Layer> layer, optional<std::string>
     }
 
     layer->setObserver(this);
+    Layer* result = layers.add(std::move(layer), before);
     observer->onUpdate();
 
-    return layers.add(std::move(layer), before);
+    return result;
 }
 
 std::unique_ptr<Layer> Style::Impl::removeLayer(const std::string& id) {