decompile scanline effect

ld_script.txt

@@ -126,7 +126,7 @@ SECTIONS {
         src/trainer_see.o(.text);
         src/wild_encounter.o(.text);
         asm/field_effect.o(.text);
-        asm/unknown_task.o(.text);
+        src/scanline_effect.o(.text);
         src/option_menu.o(.text);
         src/pokedex.o(.text);
         asm/pokedex.o(.text);