ZTS: close in mmapwrite.c

mmapwrite is used during the ZTS to identify issues with mmap-ed files.
This helper program exercises this pathway by continuously writing to a
file.  ee6bf97c7 modified the writing threads to terminate after a set
amount of total data is written.  This change allows standard program
execution to reach the end of a writer thread without closing the file
descriptor, introducing a resource "leak."

This patch appeases resource leak analyses by close()-ing the file at
the end of the thread.

Reviewed-by: Richard Yao <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Antonio Russo <[email protected]>
Closes #14353 

0 files changed, 0 insertions, 0 deletions