tools/libxl: correct vcpu affinity output with sparse physical cpu map

With not all physical cpus online (e.g. with smt=0) the output of hte
vcpu affinities is wrong, as the affinity bitmaps are capped after
nr_cpus bits, instead of using max_cpu_id.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>

tools/xl/xl_vcpu.c

@@ -144,13 +144,13 @@ static void vcpulist(int argc, char **argv)
         }
 
         for (i = 0; i<nb_domain; i++)
-            print_domain_vcpuinfo(dominfo[i].domid, physinfo.nr_cpus);
+            print_domain_vcpuinfo(dominfo[i].domid, physinfo.max_cpu_id + 1);
 
         libxl_dominfo_list_free(dominfo, nb_domain);
     } else {
         for (; argc > 0; ++argv, --argc) {
             uint32_t domid = find_domain(*argv);
-            print_domain_vcpuinfo(domid, physinfo.nr_cpus);
+            print_domain_vcpuinfo(domid, physinfo.max_cpu_id + 1);
         }
     }
   vcpulist_out: