Index: src/ch/UpdateVersionInfo.h
===================================================================
diff -u -r2b57bcded3d6ce4fe87b73dc0227e7ec82628505 -r4572f6cddf7dab06b1de99504a6bbd3680d11e6d
--- src/ch/UpdateVersionInfo.h	(.../UpdateVersionInfo.h)	(revision 2b57bcded3d6ce4fe87b73dc0227e7ec82628505)
+++ src/ch/UpdateVersionInfo.h	(.../UpdateVersionInfo.h)	(revision 4572f6cddf7dab06b1de99504a6bbd3680d11e6d)
@@ -39,7 +39,7 @@
 	UpdateVersionInfo();
 	UpdateVersionInfo(std::wstring strNumericVersion, std::wstring strReadableVersion, boost::gregorian::date dateRelease, std::wstring strDownloadLink, std::wstring strReleaseNotes);
 
-	void Merge(UpdateVersionInfo vi);
+	void Merge(const UpdateVersionInfo& vi);
 
 	unsigned long long GetFullNumericVersion() const;
 	std::wstring GetNumericVersion() const;