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(ITS#7959) [LMDB] check fstat return value.



Full_Name: Jean-Christophe Dubois
Version: 2.4.40
OS: Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (78.235.240.156)


in mdb_env_copyfd0() the function fstat() is called but the return value is not
checked.

There is no reason not to check if the system call is successful as the result
is used just after.

Patch available at URL below: 

https://github.com/jcduboi2F2Flmdb/commit/fda581a6dd2e56fac4cab2aa872753f6f0993680

JC