maelstrom: remove register keyword; fix clang (#351835)

diff --git a/fastrand.cpp b/fastrand.cpp

index 3714f02..d1cf224 100644

--- a/fastrand.cpp

+++ b/fastrand.cpp

@@ -30,10 +30,10 @@ Uint32 GetRandSeed(void)

 Uint16 FastRandom(Uint16 range)

 {

 	Uint16 result;

-	register Uint32 calc;

-	register Uint32 regD0;

-	register Uint32 regD1;

-	register Uint32 regD2;

+	Uint32 calc;

+	Uint32 regD0;

+	Uint32 regD1;

+	Uint32 regD2;

 #ifdef SERIOUS_DEBUG

   fprintf(stderr, "FastRandom(%hd)  Seed in: %lu ", range, randomSeed);

diff --git a/screenlib/SDL_FrameBuf.cpp b/screenlib/SDL_FrameBuf.cpp

index 2f7b44c..c8e394b 100644

--- a/screenlib/SDL_FrameBuf.cpp

+++ b/screenlib/SDL_FrameBuf.cpp

@@ -555,7 +555,7 @@ static inline void memswap(Uint8 *dst, Uint8 *src, Uint8 len)

 	}

 #else

 	/* Swap two buffers using a temporary variable */

-	register Uint8 tmp;

+	Uint8 tmp;

 	while ( len-- ) {

 		tmp = *dst;

    sha256 = "0dm0m5wd7amrsa8wnrblkv34sq4v4lglc2wfx8klfkdhyhi06s4k";

  };

  patches = [

    # this fixes a typedef compilation error with gcc-3.x

  patches = [ ./fix-compilation.patch ];

    ./fix-compilation.patch

    # removes register keyword

    ./c++17-fixes.diff

  ];

  buildInputs = [ SDL2 SDL2_net ];