- added some safety checks for reading empty lumps into a std::vector.

These can trip the internal safety checks, even though nothing gets read in.

src/common/filesystem/include/fs_files.h

@@ -194,8 +194,11 @@ public:
 	std::vector<uint8_t> Read(size_t len)
 	{
 		std::vector<uint8_t> buffer(len);
+		if (len > 0)
+		{
 			Size length = mReader->Read(&buffer[0], (long)len);
 			buffer.resize((size_t)length);
+		}
 		return buffer;
 	}
 
@@ -208,9 +211,13 @@ public:
 	{
 		auto len = GetLength();
 		std::vector<uint8_t> buffer(len + padding);
+		if (len > 0)
+		{
 			Size length = mReader->Read(&buffer[0], (long)len);
 			if (length < len) buffer.clear();
 			else memset(buffer.data() + len, 0, padding);
+		}
+		else buffer[0] = 0;
 		return buffer;
 	}