Codechange: use std::string_view for the string setting defaults

src/table/settings/misc_settings.ini

@@ -111,48 +111,48 @@ cat      = SC_BASIC
 name     = ""soundsset""
 type     = SLE_STRQ
 var      = BaseSounds::ini_set
-def      = nullptr
+def      = """"
 cat      = SC_BASIC
 
 [SDTG_SSTR]
 name     = ""musicset""
 type     = SLE_STRQ
 var      = BaseMusic::ini_set
-def      = nullptr
+def      = """"
 cat      = SC_BASIC
 
 [SDTG_SSTR]
 name     = ""videodriver""
 type     = SLE_STRQ
 var      = _ini_videodriver
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_SSTR]
 name     = ""musicdriver""
 type     = SLE_STRQ
 var      = _ini_musicdriver
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_SSTR]
 name     = ""sounddriver""
 type     = SLE_STRQ
 var      = _ini_sounddriver
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_SSTR]
 name     = ""blitter""
 type     = SLE_STRQ
 var      = _ini_blitter
-def      = nullptr
+def      = """"
 
 [SDTG_SSTR]
 name     = ""language""
 type     = SLE_STR
 var      = _config_language_file
-def      = nullptr
+def      = """"
 cat      = SC_BASIC
 
 ; workaround for implicit lengthof() in SDTG_LIST
@@ -168,14 +168,14 @@ cat      = SC_BASIC
 name     = ""screenshot_format""
 type     = SLE_STR
 var      = _screenshot_format_name
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_SSTR]
 name     = ""savegame_format""
 type     = SLE_STR
 var      = _savegame_format
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_BOOL]
@@ -188,28 +188,28 @@ ifdef    = HAS_TRUETYPE_FONT
 name     = ""small_font""
 type     = SLE_STR
 var      = _fcsettings.small.font
-def      = nullptr
+def      = """"
 
 [SDTG_SSTR]
 ifdef    = HAS_TRUETYPE_FONT
 name     = ""medium_font""
 type     = SLE_STR
 var      = _fcsettings.medium.font
-def      = nullptr
+def      = """"
 
 [SDTG_SSTR]
 ifdef    = HAS_TRUETYPE_FONT
 name     = ""large_font""
 type     = SLE_STR
 var      = _fcsettings.large.font
-def      = nullptr
+def      = """"
 
 [SDTG_SSTR]
 ifdef    = HAS_TRUETYPE_FONT
 name     = ""mono_font""
 type     = SLE_STR
 var      = _fcsettings.mono.font
-def      = nullptr
+def      = """"
 
 [SDTG_VAR]
 ifdef    = HAS_TRUETYPE_FONT
@@ -308,14 +308,14 @@ cat      = SC_BASIC
 name     = ""keyboard""
 type     = SLE_STR
 var      = _keyboard_opt[0]
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_SSTR]
 name     = ""keyboard_caps""
 type     = SLE_STR
 var      = _keyboard_opt[1]
-def      = nullptr
+def      = """"
 cat      = SC_EXPERT
 
 [SDTG_VAR]