[patch] minor shrinkage of logread.c

[Bernhard Fischer]

Hi,

compile-tested only, fwiw.
vda, please apply if you like it (or have a chance to test it), thanks

   text    data     bss     dec     hex filename
    734      26       4     764     2fc logread.o.orig
    694      26       4     724     2d4 logread.o

It still feels too big for what it's doing..
cheers,
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