[PATCH v2 1/2] mountd: Check for return of stat function

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simplify the check, stat() return 0 on success -1 on failure

Fixes clang reported errors e.g.

| v4clients.c:29:6: error: logical not is only applied to the left hand side of this comparison [-Werror,-Wlogical-not-parentheses]
|         if (!stat("/proc/fs/nfsd/clients", &sb) == 0 ||
|             ^                                   ~~

Signed-off-by: Khem Raj <raj.khem@xxxxxxxxx>
Cc: Konstantin Khorenko <khorenko@xxxxxxxxxxxxx>
Cc: Steve Dickson <steved@xxxxxxxxxx>
---
v2: rebased

 support/export/v4clients.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/support/export/v4clients.c b/support/export/v4clients.c
index 5f15b61..3230251 100644
--- a/support/export/v4clients.c
+++ b/support/export/v4clients.c
@@ -26,7 +26,7 @@ void v4clients_init(void)
 {
 	struct stat sb;
 
-	if (!stat("/proc/fs/nfsd/clients", &sb) == 0 ||
+	if (stat("/proc/fs/nfsd/clients", &sb) != 0 ||
 	    !S_ISDIR(sb.st_mode))
 		return;
 	if (clients_fd >= 0)
-- 
2.37.2




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