lavc/arm: fix indent in blockdsp_init_neon

libavcodec/arm/blockdsp_init_neon.c

@@ -30,6 +30,6 @@ void ff_clear_blocks_neon(int16_t *blocks);
 
 av_cold void ff_blockdsp_init_neon(BlockDSPContext *c)
 {
-      c->clear_block  = ff_clear_block_neon;
-      c->clear_blocks = ff_clear_blocks_neon;
+    c->clear_block  = ff_clear_block_neon;
+    c->clear_blocks = ff_clear_blocks_neon;
 }