coverity#1213254 Out-of-bounds read

surely this was the intent

Change-Id: I78002adebf78674259e6c63e0e3449882accdb5d

chart2/source/view/main/GL3DRenderer.cxx

@@ -823,7 +823,7 @@ void OpenGL3DRenderer::Set3DSenceInfo(sal_uInt32 nColor, bool twoSidesLighting)
 
 void OpenGL3DRenderer::SetLightInfo(bool lightOn, sal_uInt32 nColor, const glm::vec4& direction)
 {
-    if (m_LightsInfo.lightNum > MAX_LIGHT_NUM)
+    if (m_LightsInfo.lightNum >= MAX_LIGHT_NUM)
     {
         return;
     }