FreeType: mark some options as safe

Font is not safe because it uses the file system, and is dependent on
the local system anyway. YUVP is only for encoding, so it seems
irrelevant. Other options seem fine.

modules/misc/freetype.c

@@ -151,22 +151,28 @@ vlc_module_begin ()
 
     add_integer( "freetype-fontsize", 0, FONTSIZE_TEXT,
                  FONTSIZE_LONGTEXT, true )
+        change_safe()
 
     /* opacity valid on 0..255, with default 255 = fully opaque */
     add_integer_with_range( "freetype-opacity", 255, 0, 255, NULL,
         OPACITY_TEXT, OPACITY_LONGTEXT, true )
+        change_safe()
 
     /* hook to the color values list, with default 0x00ffffff = white */
     add_integer( "freetype-color", 0x00FFFFFF, COLOR_TEXT,
                  COLOR_LONGTEXT, false )
         change_integer_list( pi_color_values, ppsz_color_descriptions )
+        change_safe()
 
     add_integer( "freetype-rel-fontsize", 16, FONTSIZER_TEXT,
                  FONTSIZER_LONGTEXT, false )
         change_integer_list( pi_sizes, ppsz_sizes_text )
+        change_safe()
+
     add_integer( "freetype-effect", 2, EFFECT_TEXT,
                  EFFECT_LONGTEXT, false )
         change_integer_list( pi_effects, ppsz_effects_text )
+        change_safe()
 
     add_bool( "freetype-yuvp", false, YUVP_TEXT,
               YUVP_LONGTEXT, true )