One more use of struct info in library_sdl.js. NFC (#22917)

Missed this one in #22885.

Author: sbc100

src/library_sdl.js

@@ -859,7 +859,8 @@ var LibrarySDL = {
 #endif
           {{{ makeSetValue('SDL.keyboardState', 'code', 'down', 'i8') }}};
           // TODO: lmeta, rmeta, numlock, capslock, KMOD_MODE, KMOD_RESERVED
-          SDL.modState = ({{{ makeGetValue('SDL.keyboardState', '1248', 'i8') }}} ? {{{ cDefs.KMOD_LCTRL }}} : 0) |
+          SDL.modState =
+            ({{{ makeGetValue('SDL.keyboardState', cDefs.SDLK_LCTRL, 'i8') }}} ? {{{ cDefs.KMOD_LCTRL }}} : 0) |
             ({{{ makeGetValue('SDL.keyboardState', cDefs.SDLK_LSHIFT, 'i8') }}} ? {{{ cDefs.KMOD_LSHIFT }}} : 0) |
             ({{{ makeGetValue('SDL.keyboardState', cDefs.SDLK_LALT, 'i8') }}} ? {{{ cDefs.KMOD_LALT }}} : 0) |
             ({{{ makeGetValue('SDL.keyboardState', cDefs.SDLK_RCTRL, 'i8') }}} ? {{{ cDefs.KMOD_RCTRL }}} : 0) |

src/struct_info.json

@@ -773,6 +773,7 @@
           "KMOD_RALT",
           "KMOD_LSHIFT",
           "KMOD_RSHIFT",
+          "SDLK_LCTRL",
           "SDLK_LSHIFT",
           "SDLK_LALT",
           "SDLK_RCTRL",

src/struct_info_generated.json

@@ -371,6 +371,7 @@
         "RTLD_NOW": 2,
         "R_OK": 4,
         "SDLK_LALT": 1250,
+        "SDLK_LCTRL": 1248,
         "SDLK_LSHIFT": 1249,
         "SDLK_RALT": 1254,
         "SDLK_RCTRL": 1252,

src/struct_info_generated_wasm64.json

@@ -371,6 +371,7 @@
         "RTLD_NOW": 2,
         "R_OK": 4,
         "SDLK_LALT": 1250,
+        "SDLK_LCTRL": 1248,
         "SDLK_LSHIFT": 1249,
         "SDLK_RALT": 1254,
         "SDLK_RCTRL": 1252,