Fix Linux build warnings

ApplicationCode/ProjectDataModel/Flow/RimWellRftPlot.cpp

@@ -584,7 +584,7 @@ std::pair<RimWellRftAddress, QDateTime> RimWellRftPlot::curveDefFromCurve(const
         const RimEclipseResultCase* gridCase = dynamic_cast<const RimEclipseResultCase*>(gridCurve->rimCase());
         if (gridCase != nullptr)
         {
-            auto timeStepIndex = gridCurve->currentTimeStep();
+            size_t timeStepIndex = gridCurve->currentTimeStep();
             auto timeSteps = timeStepsFromGridCase(gridCase);
             if (timeStepIndex < timeSteps.size())
             {

ApplicationCode/ProjectDataModel/RimWellPath.cpp

@@ -319,7 +319,7 @@ QList<caf::PdmOptionItemInfo> RimWellPath::calculateValueOptions(const caf::PdmF
         if (branchCount == 0)
             branchCount = 1;
 
-        int index = 0;
+        size_t index = 0;
         while(index < branchCount)
         {
             QString uiText = QString("Branch %1").arg(QString::number(index + 1));