vtls: Fixed compilation warning and an ignored return code

curl_schannel.h:123: warning: right-hand operand of comma expression
                     has no effect

Some instances of the curlssl_close_all() function were declared with a
void return type whilst others as int. The schannel version returned
CURLE_NOT_BUILT_IN and others simply returned zero, but in all cases the
return code was ignored by the calling function Curl_ssl_close_all().

For the time being and to keep the internal API consistent, changed all
declarations to use a void return type.

To reduce code we might want to consider removing the unimplemented
versions and use a void #define like schannel does.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/vtls/gskit.h b/lib/vtls/gskit.h
index fc1c45ccb..baec82323 100644
--- a/lib/vtls/gskit.h
+++ b/lib/vtls/gskit.h
@@ -36,7 +36,7 @@ CURLcode Curl_gskit_connect(struct connectdata * conn, int sockindex);
 CURLcode Curl_gskit_connect_nonblocking(struct connectdata * conn,
                                         int sockindex, bool * done);
 void Curl_gskit_close(struct connectdata *conn, int sockindex);
-int Curl_gskit_close_all(struct SessionHandle * data);
+void Curl_gskit_close_all(struct SessionHandle * data);
 int Curl_gskit_shutdown(struct connectdata * conn, int sockindex);
 
 size_t Curl_gskit_version(char * buffer, size_t size);