libretro.snes9x: 29b78d -> 04692e

Upstream has broken git history [1], so the current version cannot be
fetched. The required patches have been upstreamed [2], and we hope
that upstream will be more careful with their git history.

The previous commit can still be viewed on github [3], but is not the
ancestor of any fetchable ref.

[1] https://github.com/libretro/snes9x/issues/199
[2] https://github.com/snes9xgit/snes9x/pull/588
[3] 29b78df8c9

pkgs/misc/emulators/retroarch/cores.nix

@@ -786,10 +786,11 @@ in with stdenv.lib.licenses;
 
   snes9x = (mkLibRetroCore rec {
     core = "snes9x";
-    src = fetchRetro {
+    src = fetchFromGitHub {
+      owner = "snes9xgit";
       repo = core;
-      rev = "29b78df8c9f0f48ed4605d08a187a134b3b316d6";
-      sha256 = "004h1pkxvbn4zlh8bqs6z17k04jw5wzbwklpgvmb7hbxshsi4qid";
+      rev = "04692e1ee45cc647423774ee17c63208c2713638";
+      sha256 = "09p9m85fxwrrrapjb08rcxknpgq5d6a87arrm1jn94r56glxlcfa";
     };
     description = "Port of SNES9x git to libretro";
     license = "Non-commercial";