OS400: fix a use-after-free/double-free case

Closes #18713

diff --git a/packages/OS400/ccsidcurl.c b/packages/OS400/ccsidcurl.c
index 101cf90247057609484b153719834240a3830c7d..b40367fd960bdcbd3d5717339e3a55c01f337ded 100644 (file)
--- a/packages/OS400/ccsidcurl.c
+++ b/packages/OS400/ccsidcurl.c
@@ -1246,6 +1246,7 @@ curl_easy_setopt_ccsid(CURL *easy, CURLoption tag, ...)
 
       data->set.postfieldsize = pfsize;         /* Replace data size. */
       s = cp;
+      cp = NULL;
     }
 
     result = curl_easy_setopt(easy, CURLOPT_POSTFIELDS, s);