PVS-Studio warning V595 for blender

static struct DerivedMesh *dynamicPaint_Modifier_apply(....)
{
  ...
  for (; surface; surface=surface->next) {
    PaintSurfaceData *sData = surface->data;
    if (surface &&
        surface->format !=
          MOD_DPAINT_SURFACE_F_IMAGESEQ &&
        sData)
    {
      ...
}

This suspicious code was found in blender project by PVS-Studio static code analyzer.
Warning message is:
V595 The 'surface' pointer was utilized before it was verified against nullptr. Check lines: 1585, 1587. bf_blenkernel dynamicpaint.c 1585

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/