Fix indentation warnings
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h: In member function 'bool LHEF::Cut::passCuts(const std::vector<long int>&, const std::vector<std::vector<double> >&) const':
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:823:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
823 | if ( match(id[i]) && !match(0, id[i]) )
| ^~
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:825:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
825 | if ( outside(pt) ) return false;
| ^~
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h: In constructor 'LHEF::HEPEUP::HEPEUP(const LHEF::XMLTag&, LHEF::HEPRUP&)':
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:2237:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
2237 | if ( tags[i]->name == "event" )
| ^~
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:2239:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
2239 | return;
| ^~~~~~
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h: In member function 'bool LHEF::HEPEUP::setSubEvent(unsigned int)':
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:2560:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
2560 | for ( int j = 0, M = weights.size(); j < M; ++j )
| ^~~
/builddir/build/BUILD/HepMC3-3.1.1/include/HepMC3/LHEF.h:2562:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
2562 | currentWeight = 0;
| ^~~~~~~~~~~~~