[Patch-gnuradio] gr_head should take longs

[Martin Braun]

Hi,

I ran into a problem when doing some tests where I piped 1e6 samples
through a filter. The problem is, gr_head() can only go as far as
MAX_INT when limiting data. However, I don't really see a reason why the
counter shouldn't be an unsigned long. Otherwise, such applications
would require some workarounds with vectors or otherwise, which I find a
bit ugly. Here's the patch. Made against #11663 in SVN.

MB


-- 
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

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KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

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