COMMON: Fix WriteStream::pos() once again

MemoryReadWriteStream now returns int32, not uint32. It actually doesn't
ever return -1 to indicate that an error occured, so uint32 was a better
choice, but that's what is used in WriteStream base class now.

That method is abstract, so that's also why OutSaveFile had to override
it.

1 files changed, 4 insertions, 0 deletions

diff --git a/backends/saves/savefile.cpp b/backends/saves/savefile.cpp
index 5e983472da..e21ea16ad8 100644
--- a/backends/saves/savefile.cpp
+++ b/backends/saves/savefile.cpp
@@ -50,6 +50,10 @@ uint32 OutSaveFile::write(const void *dataPtr, uint32 dataSize) {
 	return _wrapped->write(dataPtr, dataSize);
 }
 
+int32 OutSaveFile::pos() const {
+	return _wrapped->pos();
+}
+
 bool SaveFileManager::copySavefile(const String &oldFilename, const String &newFilename) {
 	InSaveFile *inFile = 0;
 	OutSaveFile *outFile = 0;