Bird file descriptor leak

[MrBr @ GMail]

Hi

Running multiple "configure" commands via birdc, while there is an error in
configuration file, creates multiple file descriptors.

Scenario
CentOS 6.4 2.6.32-358.el6.x86_64
bird 1.4.0
birdc.conf main configuration file
comp.conf included in bird.conf
there a loop of "configure" and several "show" commands runs in a
background to ease configuration debugging

after a while following error appears
/etc/bird/bird.conf, line 96: Unable to open included file
/etc/bird/comp.conf: Too many open files

lsof provides thousands of the following

bird      20566    root  657r      REG              253,0      617
25314 /etc/bird/comp.conf~ (deleted)
bird      20566    root  658r      REG              253,0      617
25314 /etc/bird/comp.conf~ (deleted)
bird      20566    root  659r      REG              253,0      617
25314 /etc/bird/comp.conf~ (deleted)
bird      20566    root  660r      REG              253,0      617
25314 /etc/bird/comp.conf~ (deleted)
bird      20566    root  661r      REG              253,0      617
25314 /etc/bird/comp.conf~ (deleted)
bird      20566    root  662r      REG              253,0      643
25313 /etc/bird/comp.conf~ (deleted)
bird      20566    root  663r      REG              253,0      643
25313 /etc/bird/comp.conf~ (deleted)
bird      20566    root  664r      REG              253,0      643
25313 /etc/bird/comp.conf~ (deleted)
bird      20566    root  665r      REG              253,0      695
25034 /etc/bird/comp.conf
bird      20566    root  666r      REG              253,0      695
25034 /etc/bird/comp.conf
bird      20566    root  667r      REG              253,0      695
25034 /etc/bird/comp.conf
bird      20566    root  668r      REG              253,0      695
25034 /etc/bird/comp.conf
bird      20566    root  669r      REG              253,0      695
25034 /etc/bird/comp.conf
bird      20566    root  670r      REG              253,0      695
25034 /etc/bird/comp.conf

Only solution found is to restart the bird proccess
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