From bdf4cf51b8ab75d13e3c9562141a6a1bf320b4ba Mon Sep 17 00:00:00 2001
From: Alex <dudesuchamazing@gmail.com>
Date: Sat, 17 Sep 2022 21:16:10 +0300
Subject: [PATCH] Add a missing statement in segments reservation.

Also adds an assert in FinishItem.

Fixes https://gitlab.com/kicad/code/kicad/issues/12448
---
 common/gal/opengl/opengl_gal.cpp     | 1 +
 common/gal/opengl/vertex_manager.cpp | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/common/gal/opengl/opengl_gal.cpp b/common/gal/opengl/opengl_gal.cpp
index e9552e47ab..c28ab26766 100644
--- a/common/gal/opengl/opengl_gal.cpp
+++ b/common/gal/opengl/opengl_gal.cpp
@@ -2228,6 +2228,7 @@ void OPENGL_GAL::drawSegmentChain( const std::function<VECTOR2D( int )>& aPointG
         if( startx == endx || starty == endy )
         {
             vertices += 3; // One circle
+            continue;
         }
 
         if( m_isFillEnabled || aWidth == 1.0 )
diff --git a/common/gal/opengl/vertex_manager.cpp b/common/gal/opengl/vertex_manager.cpp
index 09b3fb78b2..418d9b0645 100644
--- a/common/gal/opengl/vertex_manager.cpp
+++ b/common/gal/opengl/vertex_manager.cpp
@@ -167,6 +167,8 @@ void VERTEX_MANAGER::SetItem( VERTEX_ITEM& aItem ) const
 
 void VERTEX_MANAGER::FinishItem() const
 {
+    assert( m_reservedSpace == 0 && m_reserved == nullptr );
+
     m_container->FinishItem();
 }