Provide conforming interface for fwrite(3)

libpsx/include/stdio.h

@@ -112,7 +112,7 @@ FILE *fdopen(int fildes, const char *mode);
 FILE *fopen(const char *path, const char *mode);
 int fclose(FILE *stream);
 int fread(void *ptr, int size, int nmemb, FILE *f);
-int fwrite(void *ptr, int size, int nmemb, FILE *f);
+size_t fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream);
 
 int fgetc(FILE *f);
 int ftell(FILE *f);

libpsx/src/libc.c

@@ -649,7 +649,8 @@ int puts(const char *str)
 	return EOF;
 }
 
-int fwrite(void *ptr, int size, int nmemb, FILE *f)
+size_t fwrite(void *restrict const ptr, const size_t size, const size_t nmemb,
+			  FILE *restrict const f)
 {
 	if(IS_CONS_OUT(f)) // stdout or stderr
 	{