From 230726ae6bd23dd171e40dcbd3e35d406e344796 Mon Sep 17 00:00:00 2001
From: Alberth <alberth289346@gmail.com>
Date: Mon, 26 May 2025 21:34:04 +0200
Subject: [PATCH] Check file handle of output file as well.

---
 tools/rnc/rnc_decode_cli.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/rnc/rnc_decode_cli.cpp b/tools/rnc/rnc_decode_cli.cpp
index 9429b969..7e60ed73 100644
--- a/tools/rnc/rnc_decode_cli.cpp
+++ b/tools/rnc/rnc_decode_cli.cpp
@@ -115,6 +115,10 @@ int main(int argc, char* argv[]) {
   std::uint8_t* outdata = decompress(indata, insize, &outlen);
 
   FILE* outhandle = fopen(argv[2], "wb");
+  if (outhandle == nullptr) {
+    fprintf(stderr, "Cannot open output file.\n");
+    exit(1);
+  }
   count = fwrite(outdata, 1, outlen, outhandle);
   if (count != outlen) {
     fprintf(stderr, "Cannot write output file.\n");