[PATCH 2/7] tests/unit/socket-helpers: Don't close(-1)

[Peter Maydell <peter.maydell@linaro.org>]

In socket_check_afunix_support() we call socket(PF_UNIX, SOCK_STREAM, 0)
to see if it works, but we call close() on the result whether it
worked or not. Only close the fd if the socket() call succeeded.
Spotted by Coverity.

Resolves: Coverity CID 1497481

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 tests/unit/socket-helpers.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/unit/socket-helpers.c b/tests/unit/socket-helpers.c
index 6de27baee2e..f3439cc4e52 100644
--- a/tests/unit/socket-helpers.c
+++ b/tests/unit/socket-helpers.c
@@ -160,7 +160,6 @@ void socket_check_afunix_support(bool *has_afunix)
     int fd;
 
     fd = socket(PF_UNIX, SOCK_STREAM, 0);
-    close(fd);
 
 #ifdef _WIN32
     *has_afunix = (fd != (int)INVALID_SOCKET);
@@ -168,5 +167,8 @@ void socket_check_afunix_support(bool *has_afunix)
     *has_afunix = (fd >= 0);
 #endif
 
+    if (*has_afunix) {
+        close(fd);
+    }
     return;
 }
-- 
2.34.1