Identify wCrystalData's content and rename memory locations accordingly (#1191)

engine/menus/init_gender.asm

@@ -1,21 +1,21 @@
 InitCrystalData:
 	ld a, $1
-	ld [wd474], a
+	ld [wPlayerPrefecture], a
 	xor a
-	ld [wd473], a
+	ld [wPlayerAge], a
 	ld [wPlayerGender], a
-	ld [wd475], a
-	ld [wd476], a
-	ld [wd477], a
-	ld [wd478], a
+	ld [wPlayerPostalCode], a
+	ld [wPlayerPostalCode+1], a
+	ld [wPlayerPostalCode+2], a
+	ld [wPlayerPostalCode+3], a
 	ld [wd002], a
 	ld [wd003], a
-	ld a, [wd479]
+	ld a, [wCrystalFlags]
 	res 0, a ; ???
-	ld [wd479], a
-	ld a, [wd479]
+	ld [wCrystalFlags], a
+	ld a, [wCrystalFlags]
 	res 1, a ; ???
-	ld [wd479], a
+	ld [wCrystalFlags], a
 	ret
 
 INCLUDE "mobile/mobile_12.asm"