tools/kvm_stat: show cursor in selection screens

Show the cursor in the interactive screens to specify pid, filter or guest
name as an orientation for the user.
Signed-off-by: NStefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

tools/kvm/kvm_stat/kvm_stat

@@ -1148,13 +1148,19 @@ class Tui(object):
                     self.refresh_header(0)
                     self.update_pid(0)
                 if char == 'f':
+                    curses.curs_set(1)
                     self.show_filter_selection()
+                    curses.curs_set(0)
                     sleeptime = DELAY_INITIAL
                 if char == 'g':
+                    curses.curs_set(1)
                     self.show_vm_selection_by_guest_name()
+                    curses.curs_set(0)
                     sleeptime = DELAY_INITIAL
                 if char == 'p':
+                    curses.curs_set(1)
                     self.show_vm_selection_by_pid()
+                    curses.curs_set(0)
                     sleeptime = DELAY_INITIAL
                 if char == 'r':
                     self.stats.reset()