b8aab2c Fix man killed by SIGSEGV if invoked as 'man -D?'

Authored and Committed by jkucera 6 years ago
    Fix man killed by SIGSEGV if invoked as 'man -D?'
    
    - resolves: #1495507
    - related discussion: http://lists.nongnu.org/archive/html/man-db-devel/2018-01/msg00005.html
    - original patch: https://git.savannah.gnu.org/cgit/man-db.git/patch/?id=b32977ff73220cd351387abe558fb523d1deedbb
    
        
file modified
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