nsenter: fix clang-tidy warning

nsexec.c:148:3: warning: Initialized va_list 'args' is leaked [clang-analyzer-valist.Unterminated]

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

Author: AkihiroSuda

libcontainer/nsenter/nsexec.c

@@ -145,11 +145,11 @@ static void write_log_with_info(const char *level, const char *function, int lin
 
 	va_start(args, format);
 	if (vsnprintf(message, sizeof(message), format, args) < 0)
-		return;
-	va_end(args);
+		goto done;
 
-	if (dprintf(logfd, "{\"level\":\"%s\", \"msg\": \"%s:%d %s\"}\n", level, function, line, message) < 0)
-		return;
+	dprintf(logfd, "{\"level\":\"%s\", \"msg\": \"%s:%d %s\"}\n", level, function, line, message);
+done:
+	va_end(args);
 }
 
 #define write_log(level, fmt, ...) \