lel

commit bf021b6653c962c98d193f8b494e33660aff46cd
parent ec398bcac7faba802d51f80715c6bc2c545727d4
Author: Jacob R. Edwards <jacobouno@protonmail.com>
Date:   Sun, 18 Apr 2021 15:01:33 -0700

Rework ff_open internals

Since ntohl(3) returns an unsigned integer the image sizes
merely need their truth checked. Also the strange spacing was
modified.

Diffstat:
M
lel.c
 | 
5
++---

1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/lel.c b/lel.c
@@ -81,17 +81,16 @@ ff_open(struct img *img, FILE *fp)
 
 	if (img->state & LOADED)
 		return 0;
-	errno = EFTYPE;
 
+	errno = EFTYPE;
 	if (fread(hdr, sizeof(*hdr), 4, fp) != 4)
 		return -1;
-
 	if (memcmp(hdr, "farbfeld", 8))
 		return -1;
 
 	img->width = ntohl(hdr[2]);
 	img->height = ntohl(hdr[3]);
-	if (img->width <= 0 || img->height <= 0)
+	if (!img->width || !img->height)
 		return -1;
 
 	if (!(img->buf = malloc(img->width * img->height * 4)))