dsputil: CONFIG_DWT doesnt exist anymore

place snow dwt init under correct checks
should fix compilation with enable-random

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/dsputil.c

@@ -2869,7 +2869,7 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->vsse[5]= vsse_intra8_c;
     c->nsse[0]= nsse16_c;
     c->nsse[1]= nsse8_c;
-#if CONFIG_DWT
+#if CONFIG_SNOW_DECODER || CONFIG_SNOW_ENCODER
     ff_dsputil_init_dwt(c);
 #endif