[libnf_ct resend PATCH 2/8] Fix nfexp_snprintf return value docs

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The docs currently say "[...] Otherwise, 0 is returned."  which is just
completely wrong. Just like nfct_snprintf the expected buffer size is
returned.

Signed-off-by: Daniel Gröber <dxld@xxxxxxxxxxxxx>
---
 src/expect/api.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/expect/api.c b/src/expect/api.c
index 33099d8..39cd092 100644
--- a/src/expect/api.c
+++ b/src/expect/api.c
@@ -795,8 +795,9 @@ int nfexp_catch(struct nfct_handle *h)
  * 	- NFEXP_O_LAYER: include layer 3 information in the output, this is
  * 			*only* required by NFEXP_O_DEFAULT.
  * 
- * On error, -1 is returned and errno is set appropiately. Otherwise,
- * 0 is returned.
+ * On error, -1 is returned and errno is set appropiately. Otherwise the
+ * size of what _would_ be written is returned, even if the size of the
+ * buffer is insufficient. This behaviour is similar to snprintf.
  */
 int nfexp_snprintf(char *buf,
 		  unsigned int size,
-- 
2.20.1




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