Small things that were making vc++ unhappy...

meteoio/plugins/ALPUG.cc

@@ -305,7 +305,7 @@ void ALPUG::readMetoFile(const size_t& station_index, const Date& dateStart, con
 	}
 
 	for (int year=start_year; year<=end_year; ++year) {
-		stringstream ss;
+		ostringstream ss;
 		ss << year;
 		const std::string filename( ss.str().substr(2,2) + station_id + dflt_extension );
 		if (std::find(dirlist.begin(), dirlist.end(), filename) == dirlist.end()) //this file does not exist

meteoio/plugins/libsmet.cc

@@ -1333,7 +1333,7 @@ void SMETReader::copy_file_data(const std::string& date_stop, std::ifstream& fin
 		
 		if (SMETCommon::readLineToVec(line, tmp_vec) == nr_of_data_fields) {
 			const string& current_timestamp = tmp_vec[timestamp_field];
-			const size_t cmp_len = std::min(date_stop_len, current_timestamp.length());
+			const size_t cmp_len = min(date_stop_len, current_timestamp.length());
 			
 			if (current_timestamp.compare(0, cmp_len, date_stop) >= 0) break;
 		} else {