removed "error_public.h" dependency from "zstd.h"

programs/fuzzer.c

@@ -41,7 +41,8 @@
 #include <string.h>      /* strcmp */
 #include <time.h>        /* clock_t */
 #define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_compressContinue, ZSTD_compressBlock */
-#include "zstd.h"        /* ZSTD_VERSION_STRING, ZSTD_getErrorCode */
+#include "zstd.h"        /* ZSTD_VERSION_STRING */
+#include "error_public.h" /* ZSTD_getErrorCode */
 #include "zdict.h"       /* ZDICT_trainFromBuffer */
 #include "datagen.h"     /* RDG_genBuffer */
 #include "mem.h"