Update SDL_misc.inc to 3.4.4

Author: Free-Pascal-meets-SDL-Website

units/SDL3.pas

@@ -82,7 +82,7 @@ interface
 {$I SDL_locale.inc}                       // 3.4.4
 {$I SDL_guid.inc}                         // 3.4.2
 {$I SDL_hints.inc}                        // 3.2.12
-{$I SDL_misc.inc}                         // 3.2.0
+{$I SDL_misc.inc}                         // 3.4.4
 {$I SDL_stdinc.inc}                       // 3.1.6-prev (unfinished)
 {$I SDL_platform.inc}                     // 3.2.0
 {$I SDL_loadso.inc}                       // 3.2.0

units/SDL_misc.inc

@@ -40,6 +40,8 @@
  * \returns true on success or false on failure; call SDL_GetError() for more
  *          information.
  *
+ * \threadsafety This function should only be called on the main thread.
+ *
  * \since This function is available since SDL 3.2.0.
   }
 function SDL_OpenURL(url: PAnsiChar): Boolean; cdecl;