Replace ‘jp [hl]’ with ‘jp hl’

The former is arguably misleading (as you don’t access the memory location in hl to retrieve the jump location), and is consequently deprecated in newer versions of rgbds.

This fix silences these deprecation warnings.

engine/slot_machine.asm

@@ -796,7 +796,7 @@ Function92bd4: ; 92bd4 (24:6bd4)
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	jp [hl]
+	jp hl
 
 ; 92be4 (24:6be4)
 
@@ -1311,7 +1311,7 @@ Slots_CheckMatchedFirstTwoReels: ; 92e94
 	ld l, a
 	ld de, .return
 	push de
-	jp [hl]
+	jp hl
 
 .return
 	ld a, [wFirstTwoReelsMatching]
@@ -1422,7 +1422,7 @@ Slots_CheckMatchedAllThreeReels: ; 92f1d
 	ld l, a
 	ld de, .return
 	push de
-	jp [hl]
+	jp hl
 
 .return
 	ld a, [wSlotMatched]
@@ -1855,7 +1855,7 @@ SlotPayoutText: ; 93158 (24:7158)
 	ld l, a
 	ld de, .return
 	push de
-	jp [hl]
+	jp hl
 
 .return
 	ld hl, .Text_PrintPayout
@@ -1958,7 +1958,7 @@ SlotMachine_AnimateGolem: ; 9321d (24:721d)
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	jp [hl]
+	jp hl
 
 .Jumptable: ; 9322d (24:722d)
 
@@ -2059,7 +2059,7 @@ Slots_AnimateChansey: ; 932ac (24:72ac)
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	jp [hl]
+	jp hl
 
 .Jumptable: ; 932bc (24:72bc)