curl_easy_reset: release mime-related data.

Move curl_mime_initpart() and curl_mime_cleanpart() calls to lower-level
functions dealing with UserDefined structure contents.
This avoids memory leakages on curl-generated part mime headers.
New test 2073 checks this using the cli tool --next option: it
triggers a valgrind error if bug is present.

Bug: https://curl.haxx.se/mail/lib-2017-12/0060.html
Reported-by: Martin Galvan

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/url.h b/lib/url.h
index 5dd04fdff..0fdb8cf28 100644
--- a/lib/url.h
+++ b/lib/url.h
@@ -33,7 +33,7 @@
 
 CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn);
 CURLcode Curl_open(struct Curl_easy **curl);
-CURLcode Curl_init_userdefined(struct UserDefined *set);
+CURLcode Curl_init_userdefined(struct Curl_easy *data);
 CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
                      va_list arg);
 CURLcode Curl_dupset(struct Curl_easy * dst, struct Curl_easy * src);