Merge pull request #2271 from revel8n/fixes

Fix for alignment of zero-length files within directory based virtual disk

Source/Core/DiscIO/VolumeDirectory.cpp

@@ -477,7 +477,7 @@ void CVolumeDirectory::WriteEntry(const File::FSTEntry& entry, u32& fstOffset, u
 		m_virtualDisk.emplace(dataOffset, entry.physicalName);
 
 		// 4 byte aligned
-		dataOffset = ROUND_UP(dataOffset + entry.size, 0x8000ull);
+		dataOffset = ROUND_UP(dataOffset + std::max<u64>(entry.size, 1ull), 0x8000ull);
 	}
 }