wined3d: Only set SFLAG_DYNLOCK when map_binding = sysmem.
All other map bindings are never freed. Setting SFLAG_DYNLOCK if map_binding != sysmem might only keep a heap memory allocation around (e.g. after device_reset) that is never used.
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@ -3068,7 +3068,7 @@ HRESULT CDECL wined3d_surface_map(struct wined3d_surface *surface,
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* mapped regularly do not throw away the system memory copy. This avoids
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* the need to download the surface from OpenGL all the time. The surface
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* is still downloaded if the OpenGL texture is changed. */
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if (!(surface->flags & SFLAG_DYNLOCK))
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if (!(surface->flags & SFLAG_DYNLOCK) && surface->map_binding == WINED3D_LOCATION_SYSMEM)
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{
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if (++surface->lockCount > MAXLOCKCOUNT)
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{
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