Saveload: Add helper to skip chunk contents

src/sl/saveload.cpp

@@ -2332,6 +2332,17 @@ void SlLoadTableWithArrayLengthPrefixesMissing()
 	SetBit(_sl.block_flags, SLBF_TABLE_ARRAY_LENGTH_PREFIX_MISSING);
 }
 
+void SlSkipChunkContents()
+{
+	if (SlIsTableChunk()) SlSkipTableHeader();
+
+	if (_sl.block_mode == CH_RIFF) {
+		SlSkipBytes(SlGetFieldLength());
+	} else {
+		SlSkipArray();
+	}
+}
+
 /**
  * Save or Load (a list of) global variables.
  * @param slt The SaveLoad table with objects to save/load.

src/sl/saveload.h

@@ -1079,6 +1079,8 @@ void SlSaveTableObjectChunk(const SaveLoadTable &slt);
 void SlLoadTableOrRiffFiltered(const SaveLoadTable &slt);
 void SlLoadTableWithArrayLengthPrefixesMissing();
 
+void SlSkipChunkContents();
+
 inline void SlSaveTableObjectChunk(const NamedSaveLoadTable &slt)
 {
 	SlSaveTableObjectChunk(SlTableHeader(slt));