Fix typos in tracking module asserts (#1852)

Corrected variable names in asserts

Author: erik-wallin

Tracking/include/Tracking/Sim/IndexSourceLink.h

@@ -78,7 +78,7 @@ struct IndexSourceLinkAccessor
 
   // get the range of elements with requested geoId
   std::pair<Iterator, Iterator> range(const Acts::Surface& surface) const {
-    assert(container != nullptr);
+    assert(container_ != nullptr);
     auto [begin, end] = container_->equal_range(surface.geometryId());
     return {Iterator{begin}, Iterator{end}};
   }

Tracking/include/Tracking/Sim/MeasurementCalibrator.h

@@ -62,9 +62,9 @@ class LdmxMeasurementCalibrator {
                  typename traj_t::TrackStateProxy trackState) const {
     acts_examples::IndexSourceLink source_link{
         genericSourceLink.get<acts_examples::IndexSourceLink>()};
-    assert(m_measurements and
+    assert(m_measurements_ and
            "Undefined measurement container in LdmxMeasurementCalibrator");
-    assert((sourceLink.index() < m_measurements->size()) and
+    assert((source_link.index() < m_measurements_->size()) and
            "Source link index is outside the container bounds in "
            "LdmxMeasurementCalibrator");
 
@@ -105,9 +105,9 @@ class LdmxMeasurementCalibrator {
     acts_examples::IndexSourceLink source_link{
         genericSourceLink.get<acts_examples::IndexSourceLink>()};
 
-    assert(m_measurements and
+    assert(m_measurements_ and
            "Undefined measurement container in LdmxMeasurementCalibrator");
-    assert((sourceLink.index() < m_measurements->size()) and
+    assert((source_link.index() < m_measurements_->size()) and
            "Source link index is outside the container bounds in "
            "LdmxMeasurementCalibrator");