[RFC PATCH 1/2] system/os-win32: Remove unused Error** argument in qemu_socket_unselect

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

@errp is always NULL. Remove it, as unused.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/system/os-win32.h | 2 +-
 io/channel-socket.c       | 4 ++--
 util/oslib-win32.c        | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/system/os-win32.h b/include/system/os-win32.h
index 3aa6cee4c23..40712a948c3 100644
--- a/include/system/os-win32.h
+++ b/include/system/os-win32.h
@@ -172,7 +172,7 @@ static inline void qemu_funlockfile(FILE *f)
 bool qemu_socket_select(int sockfd, WSAEVENT hEventObject,
                         long lNetworkEvents, Error **errp);
 
-bool qemu_socket_unselect(int sockfd, Error **errp);
+bool qemu_socket_unselect(int sockfd);
 
 /* We wrap all the sockets functions so that we can set errno based on
  * WSAGetLastError(), and use file-descriptors instead of SOCKET.
diff --git a/io/channel-socket.c b/io/channel-socket.c
index 3b7ca924ff3..6ee6217e7ac 100644
--- a/io/channel-socket.c
+++ b/io/channel-socket.c
@@ -454,7 +454,7 @@ static void qio_channel_socket_finalize(Object *obj)
             }
         }
 #ifdef WIN32
-        qemu_socket_unselect(ioc->fd, NULL);
+        qemu_socket_unselect(ioc->fd);
 #endif
         close(ioc->fd);
         ioc->fd = -1;
@@ -890,7 +890,7 @@ qio_channel_socket_close(QIOChannel *ioc,
 
     if (sioc->fd != -1) {
 #ifdef WIN32
-        qemu_socket_unselect(sioc->fd, NULL);
+        qemu_socket_unselect(sioc->fd);
 #endif
         if (qio_channel_has_feature(ioc, QIO_CHANNEL_FEATURE_LISTEN)) {
             socket_listen_cleanup(sioc->fd, errp);
diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index b7351634ece..7ac3482d449 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -180,7 +180,7 @@ static int socket_error(void)
 void qemu_socket_set_block(int fd)
 {
     unsigned long opt = 0;
-    qemu_socket_unselect(fd, NULL);
+    qemu_socket_unselect(fd);
     ioctlsocket(fd, FIONBIO, &opt);
 }
 
@@ -313,9 +313,9 @@ bool qemu_socket_select(int sockfd, WSAEVENT hEventObject,
     return true;
 }
 
-bool qemu_socket_unselect(int sockfd, Error **errp)
+bool qemu_socket_unselect(int sockfd)
 {
-    return qemu_socket_select(sockfd, NULL, 0, errp);
+    return qemu_socket_select(sockfd, NULL, 0, NULL);
 }
 
 int qemu_socketpair(int domain, int type, int protocol, int sv[2])
-- 
2.49.0