Function8e814 efficiency edit

; The function in the game is:
Function8e814: ; 8e814
    push hl
    push de
    push bc
    push af
    ld hl, wc300
    ld bc, $00c1
.loop
    ld [hl], $0
    inc hl
    dec bc
    ld a, c
    or b
    jr nz, .loop
    pop af
    pop bc
    pop de
    pop hl
    ret

; More efficient would be:
Function8e814_eff:
    push hl
    push bc
    push af
    ld hl, wc300
    ld c, $c1
    xor a
.loop
    ld [hli], a
    dec c
    jr nz, .loop
    pop af
    pop bc
    pop hl
    ret