Fix StoatSpriteEngine.ADVLogList_GetADVLogVoice

This function has a different interface than the AnteaterADVEngine
version.

src/hll/AnteaterADVEngine.c

@@ -171,6 +171,15 @@ int ADVLogList_GetADVLogVoice(int log_no, int voice_no)
 	return logs[log_no].voices[voice_no];
 }
 
+int ADVLogList_GetADVLogVoiceLast(int log_no)
+{
+	check_log_nr(log_no);
+	unsigned nr_voices = logs[log_no].nr_voices;
+	if (!nr_voices)
+		return 0;
+	return logs[log_no].voices[nr_voices - 1];
+}
+
 bool ADVLogList_Save(struct page **iarray)
 {
 	// 0x64 <- 'A'

src/hll/AnteaterADVEngine.h

@@ -34,6 +34,7 @@ int ADVLogList_GetNumofADVLogText(int nADVLog);
 void ADVLogList_GetADVLogText(int nADVLog, int nText, struct string **text);
 int ADVLogList_GetNumofADVLogVoice(int nADVLog);
 int ADVLogList_GetADVLogVoice(int nADVLog, int Index);
+int ADVLogList_GetADVLogVoiceLast(int log_no); // for StoatSpriteEngine
 bool ADVLogList_Save(struct page **iarray);
 bool ADVLogList_Load(struct page **iarray);
 bool ADVSceneKeeper_AddADVScene(struct page **page);

src/hll/StoatSpriteEngine.c

@@ -933,6 +933,7 @@ HLL_LIBRARY(StoatSpriteEngine,
 	    HLL_EXPORT(ADVLogList_GetNumofADVLog, ADVLogList_GetNumofADVLog),
 	    HLL_EXPORT(ADVLogList_GetNumofADVLogText, ADVLogList_GetNumofADVLogText),
 	    HLL_EXPORT(ADVLogList_GetADVLogText, ADVLogList_GetADVLogText),
-	    HLL_EXPORT(ADVLogList_GetADVLogVoice, ADVLogList_GetADVLogVoice),
+	    // XXX: StoatSpriteEngine interface differs from AnteaterADVEngine here
+	    HLL_EXPORT(ADVLogList_GetADVLogVoice, ADVLogList_GetADVLogVoiceLast),
 	    HLL_EXPORT(ADVLogList_Save, ADVLogList_Save),
 	    HLL_EXPORT(ADVLogList_Load, ADVLogList_Load));