loplugin:redundantcast

Change-Id: I89281db92f9b75e972313a95c33473d7649a9bef
diff --git a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
index 2a13ca1..0298eba 100644
--- a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
+++ b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
@@ -212,7 +212,7 @@ static void display_primitives(const Primitives_t& primitives, double nTime, dou
    CHECK_GL_ERROR();
    glBufferData(GL_ARRAY_BUFFER, size, nullptr, GL_STREAM_DRAW);
    CHECK_GL_ERROR();
    Vertex *buf = reinterpret_cast<Vertex*>(glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY));
    Vertex *buf = static_cast<Vertex*>(glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY));

    std::vector<int> first_elements;
    int last_pos = 0;