rename global variable used to track the ezlo hint at save load in the USA version

include/room.h

@@ -158,7 +158,7 @@ typedef struct {
     /* 0x2e */ u8 location;
     /* 0x2f */ u8 field2f;
     /* 0x30 */ u8 field30;
-    /* 0x31 */ u8 field31;
+    /* 0x31 */ u8 ezlo_startup_hint;
     /* 0x32 */ u8 field32;
     /* 0x33 */ u8 field33;
 #if defined(JP) || defined(EU)

src/game.c

@@ -217,7 +217,7 @@ static void GameMain_ChangeRoom(void) {
         sub_0801855C();
     }
 #elif defined(DEMO_JP)
-    if (gRoomTransition.field31)
+    if (gRoomTransition.ezlo_startup_hint)
         CheckAreaDiscovery();
     if (gArea.unk28.textBaseIndex != 0xff) {
         sub_0801855C();

src/gameUtils.c

@@ -463,9 +463,9 @@ void DisplayEzloMessage(void) {
 void CreateMiscManager(void) {
     Entity* e = NULL;
 
-    if (gRoomTransition.field31)
+    if (gRoomTransition.ezlo_startup_hint)
         return;
-    gRoomTransition.field31 = 1;
+    gRoomTransition.ezlo_startup_hint = TRUE;
 #ifndef DEMO_JP
     gRoomTransition.location = gArea.locationIndex;
 #endif