libv4lconvert: Error out if source or destination pointers are null

Detected by Coverity.

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>

diff --git a/lib/libv4lconvert/se401.c b/lib/libv4lconvert/se401.c
index b38ef38..ce5432a 100644 (file)
--- a/lib/libv4lconvert/se401.c
+++ b/lib/libv4lconvert/se401.c
@@ -116,6 +116,9 @@ int v4lconvert_se401_to_rgb24(struct v4lconvert_data *data,
        int in, plen, bits, pixels, info;
        int x = 0, total_pixels = 0;
 
+       if (!src || !dest)
+               goto error;
+
        for (in = 0; in + 4 < src_size; in += plen) {
                bits   = src[in + 3] + (src[in + 2] << 8);
                pixels = src[in + 1] + ((src[in + 0] & 0x3f) << 8);