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-rw-r--r--lib/formdata.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/formdata.c b/lib/formdata.c
index abd2da075..c12227623 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -1553,7 +1553,7 @@ char *Curl_formpostheader(void *formp, size_t *len)
struct Form *form=(struct Form *)formp;
if(!form->data)
- return 0; /* nothing, ERROR! */
+ return NULL; /* nothing, ERROR! */
header = form->data->line;
*len = form->data->length;