Don't close output file unless it was opened.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/alf.c b/src/alf.c
index e47320a..dd9ae00 100644
--- a/src/alf.c
+++ b/src/alf.c
@@ -355,7 +355,7 @@ int main(int argc, char **argv) {
 		crunch_file(argv[optind++]);
 	}
 
-	fclose(out_file);
+	if(out_file) fclose(out_file);
 
 	exit(0);
 }