fix Termux build again

CMakeLists.txt

@@ -252,7 +252,7 @@ src/audio/midi.cpp
 )
 
 if (USE_SDL2)
-  list(APPEND AUDIO_SOURCES src/audio/sdl.cpp)
+  list(APPEND AUDIO_SOURCES src/audio/sdlAudio.cpp)
 endif()
 
 if (WITH_JACK)

src/audio/sdlAudio.cpp

@@ -17,11 +17,10 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include <SDL_audio.h>
 #include <string.h>
 #include <vector>
 #include "../ta-log.h"
-#include "sdl.h"
+#include "sdlAudio.h"
 
 void taSDLProcess(void* inst, unsigned char* buf, int nframes) {
   TAAudioSDL* in=(TAAudioSDL*)inst;

src/engine/engine.cpp

@@ -24,7 +24,7 @@
 #include "../ta-log.h"
 #include "../fileutils.h"
 #ifdef HAVE_SDL2
-#include "../audio/sdl.h"
+#include "../audio/sdlAudio.h"
 #endif
 #include <stdexcept>
 #ifndef _WIN32