spinner: Fix internal logic about special value show instead of number.

Summary:
If there is a special value for current spinner value, just jump to apply and show up the special value for entry text.
There is no need to check format.

@fix

Test Plan:
Add special value for each spinner value.
Spinner editable set as true.
Click the button layout for activated spinner entry.
Check the entry text.

Reviewers: cedric, Hermet

Reviewed By: Hermet

Differential Revision: https://phab.enlightenment.org/D2976

legacy/elementary/src/lib/elm_spinner.c

@@ -156,12 +156,12 @@ _entry_show(Elm_Spinner_Data *sd)
           }
      }
 
-apply:
    if (_is_label_format_integer(fmt))
      snprintf(buf, sizeof(buf), fmt, (int)sd->val);
    else
      snprintf(buf, sizeof(buf), fmt, sd->val);
 
+apply:
    elm_object_text_set(sd->ent, buf);
 }