From a5981ab04308c9302df3c787cb654ee613f791ce Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Wed, 16 Aug 2017 20:31:38 +0200
Subject: [PATCH] tweaks: don't close a descriptor when its stream has already
 been closed

---
 src/files.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/files.c b/src/files.c
index f1a4b93a..4ba2e4e9 100644
--- a/src/files.c
+++ b/src/files.c
@@ -704,13 +704,11 @@ int is_file_writable(const char *filename)
     if ((fd = open(full_filename, O_WRONLY | O_CREAT | O_APPEND, S_IRUSR |
 		S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)) == -1)
 	result = FALSE;
-    else {
-	if ((f = fdopen(fd, "a")) == NULL)
-	    result = FALSE;
-	else
-	    fclose(f);
+    else if ((f = fdopen(fd, "a")) == NULL) {
+	result = FALSE;
 	close(fd);
-    }
+    } else
+	fclose(f);
 
     free(full_filename);