optimized __idvrmu branching

Author: ZERICO2005

src/crt/idvrmu.src

@@ -24,23 +24,24 @@ __idvrmu.hijack_a_iters_ude_dividend:
 
 	or	a, a
 	sbc	hl, hl
-
+	; jr	.L.loop
+	db	$DA		; jp c, *
+.L.restore_skip:
+	inc	de		; DE |= 1
+	jr	z, .L.finish
 .L.loop:
 	ex	de, hl
 	add	hl, hl
 	ex	de, hl
 	adc	hl, hl
 
 	sbc	hl, bc
-	inc	e
 
+	dec	a
 	jr	nc, .L.restore_skip
 	add	hl, bc
-	dec	e
-.L.restore_skip:
-
-	dec	a
 	jr	nz, .L.loop
+.L.finish:
 
 	pop	af
 	ret