small refactoring

src/save/GenericGameStorage.cpp

@@ -1153,7 +1153,9 @@ void DisplaySaveResult(int unk, char* name)
 
 bool SaveGameForPause(int type)
 {
-	if (AllowMissionReplay != 0 || type != 3 && WaitForSave > CTimer::GetTimeInMilliseconds())
+	if (AllowMissionReplay != MISSION_RETRY_STAGE_NORMAL)
+		return false;
+	if (type != SAVE_TYPE_QUICKSAVE_FOR_MISSION_REPLAY && WaitForSave > CTimer::GetTimeInMilliseconds())
 		return false;
 	WaitForSave = 0;
 	if (gGameState != GS_PLAYING_GAME || CTheScripts::IsPlayerOnAMission() || CStats::LastMissionPassedName[0] == '\0') {

src/save/GenericGameStorage.h

@@ -52,4 +52,12 @@ const char TopLineEmptyFile[] = "THIS FILE IS NOT VALID YET";
 extern int8 IsQuickSave; // originally int
 
 bool SaveGameForPause(int);
+
+enum {
+	SAVE_TYPE_NORMAL,
+	SAVE_TYPE_QUICKSAVE,
+	SAVE_TYPE_2,
+	SAVE_TYPE_QUICKSAVE_FOR_MISSION_REPLAY
+};
+
 #endif