From 8701f10ea9532b92018f20bf2bd6eb8df45e188b Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Sat, 27 Apr 2019 19:30:01 +0200
Subject: [PATCH] Don't crash if exif_content_ref/unref is passed NULL.

The rest of the API functions already handle NULL values.
---
 libexif/exif-content.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libexif/exif-content.c b/libexif/exif-content.c
index 6d6c589..5f39c1b 100644
--- a/libexif/exif-content.c
+++ b/libexif/exif-content.c
@@ -78,12 +78,18 @@ exif_content_new_mem (ExifMem *mem)
 void
 exif_content_ref (ExifContent *content)
 {
+	if (!content)
+		return;
+
 	content->priv->ref_count++;
 }
 
 void
 exif_content_unref (ExifContent *content)
 {
+	if (!content)
+		return;
+
 	content->priv->ref_count--;
 	if (!content->priv->ref_count)
 		exif_content_free (content);
-- 
2.7.4