[numerics] fix compilation when PATH is not enabled
#include "LinearComplementarityProblem.h"
#include "SolverOptions.h"
+#include "LCP_Solvers.h"
#ifdef HAVE_PATHFERRIS
#include <stdlib.h>
#include <string.h>
#include <math.h>
-#include "LCP_Solvers.h"
#include "SimpleLCP.h"
#include "numerics_verbose.h"
