libavfilter/vf_gradfun.c:137: error: Uninitialized Value
  The value read from cpu_flags was never initialized.

libavfilter/vf_gradfun.c:137:23: 
135.     if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX2)
136.         gf->filter_line = ff_gradfun_filter_line_mmx2;
137.     if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
                           ^
138.         gf->filter_line = ff_gradfun_filter_line_ssse3;
139.     if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
