From c3efccaa9ca798bc545dc93b8e79972dcb382bfd Mon Sep 17 00:00:00 2001
From: omar <omarcornut@gmail.com>
Date: Wed, 2 Jan 2019 23:49:31 +0100
Subject: [PATCH] Docking: Merge fix duplicate line + added assert to ease
 debugging.

---
 imgui.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/imgui.cpp b/imgui.cpp
index e697ceab8..a37cc8fcb 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -3513,7 +3513,6 @@ void ImGui::NewFrame()
 
     // Handle user moving window with mouse (at the beginning of the frame to avoid input lag or sheering)
     UpdateMouseMovingWindowNewFrame();
-    UpdateHoveredWindowAndCaptureFlags();
 
     // Background darkening/whitening
     if (GetFrontMostPopupModal() != NULL || (g.NavWindowingTarget != NULL && g.NavWindowingHighlightAlpha > 0.0f))
@@ -10316,6 +10315,7 @@ void ImGui::DockContextBuildAddWindowsToNodes(ImGuiContext* ctx, ImGuiID root_id
 
 void ImGui::DockContextQueueDock(ImGuiContext* ctx, ImGuiWindow* target, ImGuiDockNode* target_node, ImGuiWindow* payload, ImGuiDir split_dir, float split_ratio, bool split_outer)
 {
+    IM_ASSERT(target != payload);
     ImGuiDockRequest req;
     req.Type = ImGuiDockRequestType_Dock;
     req.DockTargetWindow = target;