Fix a warning with sfizz_import.h in C

src/sfizz/import/sfizz_import.cpp

@@ -4,7 +4,6 @@
 // license. You should have receive a LICENSE.md file along with the code.
 // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
 
-#include "sfizz.h"
 #include "sfizz_import.h"
 #include "ForeignInstrument.h"
 

src/sfizz/import/sfizz_import.h

@@ -5,8 +5,7 @@
 // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
 
 #pragma once
-
-typedef struct sfizz_synth_t sfizz_synth_t;
+#include <sfizz.h>
 
 /**
  * @brief Loads or imports an instrument file.