Tech ENABLE_GLBEGIN_GLEND_REMOVAL - Fix in GLGizmoRotate::render_angle_arc():

Tech ENABLE_GLINDEXEDVERTEXARRAY_REMOVAL - Fix in GLModel::render()

(cherry picked from commit prusa3d/PrusaSlicer@2379588196)

src/slic3r/GUI/Gizmos/GLGizmoRotate.hpp

@@ -54,6 +54,7 @@ private:
     GrabberConnection m_grabber_connection;
     float m_old_radius{ 0.0f };
     float m_old_hover_radius{ 0.0f };
+    float m_old_angle{ 0.0f };
 
 public:
     GLGizmoRotate(GLCanvas3D& parent, Axis axis);