Commit after setting charset.

mailnews/base/util/nsMsgDBFolder.cpp

@@ -159,6 +159,7 @@ NS_IMETHODIMP nsMsgDBFolder::SetCharset(PRUnichar * aCharset)
 	{
 		nsString charset(aCharset);
 		rv = folderInfo->SetCharacterSet(&charset);
+		db->Commit(kLargeCommit);
 	}
 	return rv;
 }