CHUI-760 FIX Conversation.log file not saved in user specified location

Changed LLConversationLog::getFileName() to use LL_PATH_PER_ACCOUNT_CHAT_LOGS instead of LL_PATH_PER_SL_ACCOUNT

indra/newview/llconversationlog.cpp

@@ -378,7 +378,7 @@ void LLConversationLog::cache()
 std::string LLConversationLog::getFileName()
 {
 	std::string filename = "conversation";
-	return gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, filename) + ".log";
+	return gDirUtilp->getExpandedFilename(LL_PATH_PER_ACCOUNT_CHAT_LOGS, filename) + ".log";
 }
 
 bool LLConversationLog::saveToFile(const std::string& filename)