Forgot to utilize references.

Still compiled, but wasn't the best move.

src/Profile.cpp

@@ -1073,7 +1073,7 @@ XNode* Profile::SaveGeneralDataCreateNode() const
 
 	{
 		XNode* pUnlocks = pGeneralDataNode->AppendChild("Unlocks");
-		for (RString const unlockEntry : m_UnlockedEntryIDs)
+		for (RString const &unlockEntry : m_UnlockedEntryIDs)
 		{
 			XNode *pEntry = pUnlocks->AppendChild("UnlockEntry");
 			pEntry->AppendAttr( "UnlockEntryID", unlockEntry );

src/SongUtil.cpp

@@ -907,7 +907,7 @@ void SongUtil::GetAllSongGenres( vector<RString> &vsOut )
 		if( !(*song)->m_sGenre.empty() )
 			genres.insert( (*song)->m_sGenre );
 	}
-	for (RString const genre : genres)
+	for (RString const &genre : genres)
 	{
 		vsOut.push_back( genre );
 	}