Bug#419771: Segfaults with mod_auth_dbd and "DBDriver pgsql"

[Gasper Zejn <zejn@kiberpipa.org>]

Package: libapr1
Version: 1.2.7-8.2


DBD configuration:
==========
    DBDriver pgsql
    DBDParams "host=127.0.0.1 port=5432 dbname=auth user=auth 
password=secretpass"
    DBDPersist Off
    DBDMin  1
    DBDKeep 2
    DBDMax  10
    DBDExptime 60

    <Directory /home/test/>
        AuthType Basic
        AuthName "My Server"
        AuthBasicProvider dbd
        Require valid-user
        AuthDBDUserPWQuery "SELECT pass FROM users WHERE username = %s"
    </Directory>
==========


==========
# gdb apache2
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This GDB was configured as "i486-linux-gnu"...
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Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) r
Starting program: /usr/sbin/apache2
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Failed to read a valid object file image from memory.
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[Thread debugging using libthread_db enabled]
[New Thread -1216047424 (LWP 8926)]
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---Type <return> to continue, or q <return> to quit---
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Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1216047424 (LWP 8926)]
0xb7d3ca0a in apr_hashfunc_default () from /usr/lib/libapr-1.so.0
(gdb)           
=============