fix Apple Invader sound on //gs

Uses LDA/BIT $C033 instead of $C030 for some reason.

src/prelaunch/apple.invader.a

@@ -17,6 +17,12 @@
          sta   $6020
          jsr   $6002      ; decompress
 
+         lda   #$30       ; fix sound on //gs
+         sta   $1A35      ; enemy destruct
+         sta   $1D9E      ; player destruct
+         sta   $1C36      ; bonus ship
+         sta   $1CCB      ; kill bonus ship
+
          lda   #$D8       ; move location from $3F2 to $3D8
          sta   $1113      ; (program uses reset vector for storage)
          sta   $1245
@@ -57,6 +63,6 @@
          sta   $7fe       ; overwritten by GS acceleration
          jmp   $5F00
 
-!if * > $1C0 {
+!if * > $1C1 {
   !error "code is too large, ends at ", *
 }