curl_setup_once: Remove ERRNO/SET_ERRNO macros

Prior to this change (SET_)ERRNO mapped to GetLastError/SetLastError
for Win32 and regular errno otherwise.

I reviewed the code and found no justifiable reason for conflating errno
on WIN32 with GetLastError/SetLastError. All Win32 CRTs support errno,
and any Win32 multithreaded CRT supports thread-local errno.

Fixes https://github.com/curl/curl/issues/895
Closes https://github.com/curl/curl/pull/1589

1 files changed, 6 insertions, 13 deletions

diff --git a/lib/curl_ntlm_wb.c b/lib/curl_ntlm_wb.c
index 9f5b87bc3..9e9586cc3 100644
--- a/lib/curl_ntlm_wb.c
+++ b/lib/curl_ntlm_wb.c
@@ -123,7 +123,6 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
   struct passwd pw, *pw_res;
   char pwbuf[1024];
 #endif
-  int error;
 
   /* Return if communication with ntlm_auth already set up */
   if(conn->ntlm_auth_hlpr_socket != CURL_SOCKET_BAD ||
@@ -178,26 +177,23 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
     ntlm_auth = NTLM_WB_FILE;
 
   if(access(ntlm_auth, X_OK) != 0) {
-    error = ERRNO;
     failf(conn->data, "Could not access ntlm_auth: %s errno %d: %s",
-          ntlm_auth, error, Curl_strerror(conn, error));
+          ntlm_auth, errno, Curl_strerror(conn, errno));
     goto done;
   }
 
   if(socketpair(AF_UNIX, SOCK_STREAM, 0, sockfds)) {
-    error = ERRNO;
     failf(conn->data, "Could not open socket pair. errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     goto done;
   }
 
   child_pid = fork();
   if(child_pid == -1) {
-    error = ERRNO;
     sclose(sockfds[0]);
     sclose(sockfds[1]);
     failf(conn->data, "Could not fork. errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     goto done;
   }
   else if(!child_pid) {
@@ -208,16 +204,14 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
     /* Don't use sclose in the child since it fools the socket leak detector */
     sclose_nolog(sockfds[0]);
     if(dup2(sockfds[1], STDIN_FILENO) == -1) {
-      error = ERRNO;
       failf(conn->data, "Could not redirect child stdin. errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       exit(1);
     }
 
     if(dup2(sockfds[1], STDOUT_FILENO) == -1) {
-      error = ERRNO;
       failf(conn->data, "Could not redirect child stdout. errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       exit(1);
     }
 
@@ -235,10 +229,9 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
             "--username", username,
             NULL);
 
-    error = ERRNO;
     sclose_nolog(sockfds[1]);
     failf(conn->data, "Could not execl(). errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     exit(1);
   }