[weather] More const ref arg passing

dataengines/weather/ions/wetter.com/ion_wettercom.cpp

@@ -800,7 +800,7 @@ WeatherData::ForecastInfo WeatherData::ForecastPeriod::getWeather() const
     return result;
 }
 
-int WeatherData::ForecastPeriod::getMaxTemp(QVector<WeatherData::ForecastInfo *> forecastInfos) const
+int WeatherData::ForecastPeriod::getMaxTemp(const QVector<WeatherData::ForecastInfo*>& forecastInfos) const
 {
     int result = -273;
     foreach(const WeatherData::ForecastInfo * forecast, forecastInfos) {
@@ -810,7 +810,7 @@ int WeatherData::ForecastPeriod::getMaxTemp(QVector<WeatherData::ForecastInfo *>
     return result;
 }
 
-int WeatherData::ForecastPeriod::getMinTemp(QVector<WeatherData::ForecastInfo *> forecastInfos) const
+int WeatherData::ForecastPeriod::getMinTemp(const QVector<WeatherData::ForecastInfo*>& forecastInfos) const
 {
     int result = 100;
     foreach(const WeatherData::ForecastInfo * forecast, forecastInfos) {

dataengines/weather/ions/wetter.com/ion_wettercom.h

@@ -87,8 +87,8 @@ public:
         QVector<WeatherData::ForecastInfo *> dayForecasts;
         QVector<WeatherData::ForecastInfo *> nightForecasts;
     private:
-        int getMaxTemp(QVector<WeatherData::ForecastInfo *> forecastInfos) const;
-        int getMinTemp(QVector<WeatherData::ForecastInfo *> forecastInfos) const;
+        int getMaxTemp(const QVector<WeatherData::ForecastInfo*>& forecastInfos) const;
+        int getMinTemp(const QVector<WeatherData::ForecastInfo*>& forecastInfos) const;
     };
 
     QVector<WeatherData::ForecastPeriod *> forecasts;