bug#33287: [PATCH] sync: add missing brackets in sync_arg()

[Kamil Dudka]

Detected by Coverity Analysis:

Error: RESOURCE_LEAK (CWE-772):
coreutils-8.30/src/sync.c:112: open_fn: Returning handle opened by "open".
coreutils-8.30/src/sync.c:112: var_assign: Assigning: "fd" = handle returned 
from "open(file, 2049)".
coreutils-8.30/src/sync.c:115: leaked_handle: Handle variable "fd" going out of 
scope leaks the handle.
113|         if (fd < 0)
114|           error (0, rd_errno, _("error opening %s"), quoteaf (file));
115|->       return false;
116|       }
117|
---
 src/sync.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/sync.c b/src/sync.c
index bd3671a19..607fa8f7f 100644
--- a/src/sync.c
+++ b/src/sync.c
@@ -111,8 +111,10 @@ sync_arg (enum sync_mode mode, char const *file)
       if (open_flags != (O_WRONLY | O_NONBLOCK))
         fd = open (file, O_WRONLY | O_NONBLOCK);
       if (fd < 0)
-        error (0, rd_errno, _("error opening %s"), quoteaf (file));
-      return false;
+        {
+          error (0, rd_errno, _("error opening %s"), quoteaf (file));
+          return false;
+        }
     }
 
   /* We used O_NONBLOCK above to not hang with fifos,
-- 
2.17.2