NULL rather than 0 pointers

modules/access/screen/screen.c

@@ -99,7 +99,7 @@ vlc_module_begin ()
 
     add_integer( "screen-caching", DEFAULT_PTS_DELAY / 1000, NULL,
         CACHING_TEXT, CACHING_LONGTEXT, true )
-    add_float( "screen-fps", SCREEN_FPS, 0, FPS_TEXT, FPS_LONGTEXT, true )
+    add_float( "screen-fps", SCREEN_FPS, NULL, FPS_TEXT, FPS_LONGTEXT, true )
 
 #ifdef SCREEN_SUBSCREEN
     add_integer( "screen-top", 0, NULL, TOP_TEXT, TOP_LONGTEXT, true )

modules/demux/rawaud.c

@@ -67,8 +67,8 @@ vlc_module_begin();
     set_subcategory( SUBCAT_INPUT_DEMUX );
     set_callbacks( Open, Close );
     add_shortcut( "rawaud" );
-    add_integer( "rawaud-channels", 2, 0, CHANNELS_TEXT, CHANNELS_LONGTEXT, false );
-    add_integer( "rawaud-samplerate", 48000, 0, SAMPLERATE_TEXT, SAMPLERATE_LONGTEXT, false );
+    add_integer( "rawaud-channels", 2, NULL, CHANNELS_TEXT, CHANNELS_LONGTEXT, false );
+    add_integer( "rawaud-samplerate", 48000, NULL, SAMPLERATE_TEXT, SAMPLERATE_LONGTEXT, false );
     add_string( "rawaud-fourcc", FOURCC_DEFAULT, NULL,
                 FOURCC_TEXT, FOURCC_LONGTEXT, false );
     add_string( "rawaud-lang", "eng", NULL, LANG_TEXT, LANG_LONGTEXT, false);

modules/demux/rawvid.c

@@ -69,8 +69,8 @@ vlc_module_begin ()
     set_callbacks( Open, Close )
     add_shortcut( "rawvideo" )
     add_string( "rawvid-fps", NULL, NULL, FPS_TEXT, FPS_LONGTEXT, false )
-    add_integer( "rawvid-width", 0, 0, WIDTH_TEXT, WIDTH_LONGTEXT, 0 )
-    add_integer( "rawvid-height", 0, 0, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 )
+    add_integer( "rawvid-width", 0, NULL, WIDTH_TEXT, WIDTH_LONGTEXT, 0 )
+    add_integer( "rawvid-height", 0, NULL, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 )
     add_string( "rawvid-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
                 true )
     add_string( "rawvid-aspect-ratio", NULL, NULL,