Fix compilation for gcc/clang + tests for serialization

Former-commit-id: db9c93a1db3c57f268fc17e411402e071fc8675a

src/Nazara/Renderer/OpenGL.cpp

@@ -2078,7 +2078,6 @@ namespace Nz
 	};
 
 	static_assert(VertexComponent_Max + 1 == 16, "Attribute index array is incomplete");
-}
 
 PFNGLACTIVETEXTUREPROC            glActiveTexture            = nullptr;
 PFNGLATTACHSHADERPROC             glAttachShader             = nullptr;
@@ -2260,3 +2259,5 @@ GLX::PFNGLXSWAPINTERVALEXTPROC         glXSwapIntervalEXT      = nullptr;
 GLX::PFNGLXSWAPINTERVALMESAPROC        NzglXSwapIntervalMESA   = nullptr;
 GLX::PFNGLXSWAPINTERVALSGIPROC         glXSwapIntervalSGI      = nullptr;
 #endif
+
+}