Drop unused patch

dynapi.patch

@@ -1,84 +0,0 @@
-
-# HG changeset patch
-# User Ryan C. Gordon <icculus@icculus.org>
-# Date 1526575846 14400
-# Node ID 7babfecee045fac18d95e5936fede534ca54ed24
-# Parent  9e46f3dd75fd2e85e0e3ebb8a77329bc74a16e70
-dynapi: don't let system loader resolve the initializer to the wrong version.
-
-Fixes problems launching Firewatch on Linux (which statically links SDL but
-also dynamically loads a system-wide copy from a plugin shared library) with
-a newer SDL build.
-
-diff -r 9e46f3dd75fd -r 7babfecee045 src/dynapi/SDL_dynapi.c
---- a/src/dynapi/SDL_dynapi.c	Fri May 11 09:37:00 2018 +0300
-+++ b/src/dynapi/SDL_dynapi.c	Thu May 17 12:50:46 2018 -0400
-@@ -167,15 +167,10 @@
- #error Write me.
- #endif
- 
--
--
--/* Here's the exported entry point that fills in the jump table. */
--/*  Use specific types when an "int" might suffice to keep this sane. */
--typedef Sint32 (SDLCALL *SDL_DYNAPI_ENTRYFN)(Uint32 apiver, void *table, Uint32 tablesize);
--extern DECLSPEC Sint32 SDLCALL SDL_DYNAPI_entry(Uint32, void *, Uint32);
--
--Sint32
--SDL_DYNAPI_entry(Uint32 apiver, void *table, Uint32 tablesize)
-+/* we make this a static function so we can call the correct one without the
-+   system's dynamic linker resolving to the wrong version of this. */
-+static Sint32
-+initialize_jumptable(Uint32 apiver, void *table, Uint32 tablesize)
- {
-     SDL_DYNAPI_jump_table *output_jump_table = (SDL_DYNAPI_jump_table *) table;
- 
-@@ -202,6 +197,18 @@
- }
- 
- 
-+/* Here's the exported entry point that fills in the jump table. */
-+/*  Use specific types when an "int" might suffice to keep this sane. */
-+typedef Sint32 (SDLCALL *SDL_DYNAPI_ENTRYFN)(Uint32 apiver, void *table, Uint32 tablesize);
-+extern DECLSPEC Sint32 SDLCALL SDL_DYNAPI_entry(Uint32, void *, Uint32);
-+
-+Sint32
-+SDL_DYNAPI_entry(Uint32 apiver, void *table, Uint32 tablesize)
-+{
-+    return initialize_jumptable(apiver, table, tablesize);
-+}
-+
-+
- /* Obviously we can't use SDL_LoadObject() to load SDL.  :)  */
- /* Also obviously, we never close the loaded library. */
- #if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
-@@ -260,7 +267,7 @@
- SDL_InitDynamicAPILocked(void)
- {
-     const char *libname = SDL_getenv_REAL("SDL_DYNAMIC_API");
--    SDL_DYNAPI_ENTRYFN entry = SDL_DYNAPI_entry;  /* funcs from here by default. */
-+    SDL_DYNAPI_ENTRYFN entry = NULL;  /* funcs from here by default. */
- 
-     if (libname) {
-         entry = (SDL_DYNAPI_ENTRYFN) get_sdlapi_entry(libname, "SDL_DYNAPI_entry");
-@@ -268,16 +275,15 @@
-             /* !!! FIXME: fail to startup here instead? */
-             /* !!! FIXME: definitely warn user. */
-             /* Just fill in the function pointers from this library. */
--            entry = SDL_DYNAPI_entry;
-         }
-     }
- 
--    if (entry(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table)) < 0) {
-+    if (!entry || (entry(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table)) < 0)) {
-         /* !!! FIXME: fail to startup here instead? */
-         /* !!! FIXME: definitely warn user. */
-         /* Just fill in the function pointers from this library. */
--        if (entry != SDL_DYNAPI_entry) {
--            if (!SDL_DYNAPI_entry(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table))) {
-+        if (!entry) {
-+            if (!initialize_jumptable(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table))) {
-                 /* !!! FIXME: now we're screwed. Should definitely abort now. */
-             }
-         }
-