Merge branch 'ep/maint-equals-null-cocci' for maint-2.35

* ep/maint-equals-null-cocci:
  tree-wide: apply equals-null.cocci
  contrib/coccinnelle: add equals-null.cocci

daemon.c

@@ -447,7 +447,7 @@ static void copy_to_log(int fd)
 	FILE *fp;
 
 	fp = fdopen(fd, "r");
-	if (fp == NULL) {
+	if (!fp) {
 		logerror("fdopen of error channel failed");
 		close(fd);
 		return;