[EMCAL-688] Fix ClusterLabel.h constructor (#12932)

The order in which the labels and the energy fraction are given inside the addValue are label first, fraction second. However the constructer was expecting energy first and label second. This is now changed in the constructer.

Author: mhemmer-cern

DataFormats/Detectors/EMCAL/include/DataFormatsEMCAL/ClusterLabel.h

@@ -38,12 +38,12 @@ class ClusterLabel
   struct labelWithE {
 
     /// \brief Constructor
-    labelWithE() : energyFraction(0.), label(0) {}
+    labelWithE() : label(0), energyFraction(0.) {}
 
     /// \brief Constructor
-    /// \param e Energy fraction
     /// \param l MC label
-    labelWithE(float e, int l) : energyFraction(e), label(l) {}
+    /// \param e Energy fraction
+    labelWithE(int l, float e) : label(l), energyFraction(e) {}
 
     /// \brief Comparison lower operator comparing cells based on energy
     ///