lavc/aarch64: Do not use the neon horizontal chroma loop filter for H.264 4:2:2.

(cherry picked from commit 4faea46bd9)

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

libavcodec/aarch64/h264dsp_init_aarch64.c

@@ -78,6 +78,7 @@ av_cold void ff_h264dsp_init_aarch64(H264DSPContext *c, const int bit_depth,
         c->h264_v_loop_filter_luma   = ff_h264_v_loop_filter_luma_neon;
         c->h264_h_loop_filter_luma   = ff_h264_h_loop_filter_luma_neon;
         c->h264_v_loop_filter_chroma = ff_h264_v_loop_filter_chroma_neon;
+        if (chroma_format_idc <= 1)
         c->h264_h_loop_filter_chroma = ff_h264_h_loop_filter_chroma_neon;
 
         c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels_16_neon;