Change a call in select_branching_object() from initial_lp_solve() to

dual_simplex()

Back in the years Ted changed this call to initial_lp_solve() and there must
have been a reason for that, but it really seems that dual_simplex() is the
correct call here, so we changed it back.

src/LP/lp_branch.c

@@ -1634,7 +1634,7 @@ int select_branching_object(lp_prob *p, int *cuts, branch_obj **candidate)
 
 		  } else {
 		     load_basis(lp_data, cstat, rstat);
-		     can->termcode[j] = initial_lp_solve(lp_data, can->iterd+j);
+		     can->termcode[j] = dual_simplex(lp_data, can->iterd+j);
 		     total_iters+=*(can->iterd+j);
 
 		  }