Fix inconsistent initial spacing between keys

Settings defined with `get_dip_pref` had a wrong default value on first
launch.

The "right" default value was used after the shared preferences are
populated.

srcs/juloo.keyboard2/Config.java

@@ -295,7 +295,7 @@ private float get_dip_pref(DisplayMetrics dm, String pref_name, float def)
     try { value = _prefs.getInt(pref_name, -1); }
     catch (Exception e) { value = _prefs.getFloat(pref_name, -1f); }
     if (value < 0f)
-      return (def);
+      value = def;
     return (TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value, dm));
   }