Upgrade curl to curl-7_78_0

Test: make
Change-Id: Icd602cfe251ab2fcd31320b08894b303d1a824d8
diff --git a/lib/select.c b/lib/select.c
index 917133b..52dca5a 100644
--- a/lib/select.c
+++ b/lib/select.c
@@ -5,11 +5,11 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2020, Daniel Stenberg, <[email protected]>, et al.
+ * Copyright (C) 1998 - 2021, Daniel Stenberg, <[email protected]>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
+ * are also available at https://curl.se/docs/copyright.html.
  *
  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  * copies of the Software, and permit persons to whom the Software is
@@ -130,6 +130,7 @@
   return r;
 }
 
+#ifndef HAVE_POLL_FINE
 /*
  * This is a wrapper around select() to aid in Windows compatibility.
  * A negative timeout value makes this function wait indefinitely,
@@ -141,11 +142,11 @@
  *    0 = timeout
  *    N = number of signalled file descriptors
  */
-int Curl_select(curl_socket_t maxfd,   /* highest socket number */
-                fd_set *fds_read,      /* sockets ready for reading */
-                fd_set *fds_write,     /* sockets ready for writing */
-                fd_set *fds_err,       /* sockets with errors */
-                timediff_t timeout_ms) /* milliseconds to wait */
+static int our_select(curl_socket_t maxfd,   /* highest socket number */
+                      fd_set *fds_read,      /* sockets ready for reading */
+                      fd_set *fds_write,     /* sockets ready for writing */
+                      fd_set *fds_err,       /* sockets with errors */
+                      timediff_t timeout_ms) /* milliseconds to wait */
 {
   struct timeval pending_tv;
   struct timeval *ptimeout;
@@ -220,6 +221,8 @@
 #endif
 }
 
+#endif
+
 /*
  * Wait for read or write events on a set of file descriptors. It uses poll()
  * when a fine poll() is available, in order to avoid limits with FD_SETSIZE,
@@ -412,7 +415,7 @@
      curl_socket_t is unsigned in such cases and thus -1 is the largest
      value).
   */
-  r = Curl_select(maxfd, &fds_read, &fds_write, &fds_err, timeout_ms);
+  r = our_select(maxfd, &fds_read, &fds_write, &fds_err, timeout_ms);
   if(r <= 0)
     return r;
 
@@ -439,7 +442,7 @@
       if(ufds[i].events & POLLPRI)
         ufds[i].revents |= POLLPRI;
     }
-    if(ufds[i].revents != 0)
+    if(ufds[i].revents)
       r++;
   }