fix: compilation on macOS

src/optparse.c

@@ -14,6 +14,7 @@
 #include <palerain.h>
 #include <sys/mman.h>
 #include <inttypes.h>
+#include <sys/stat.h>
 #ifdef TUI
 #include <tui.h>
 #endif

src/override_file.c

@@ -13,6 +13,7 @@
 #include <getopt.h>
 #include <sys/mman.h>
 #include <errno.h>
+#include <sys/stat.h>
 
 int override_file(override_file_t *finfo, niarelap_file_t** orig, unsigned int *orig_len, char *filename) {
 	int ret = 0;