minor bug on get_res_value and get_res_value_keep

Hi,

I would like to report a minor bug on get_res_value and
get_res_value_keep ($NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl)

In both functions the the local variable intended as output is not used:

function get_res_value(res,resname:string,default_val)
local res_value
begin
[snip]
   return(return_val)
end

The fix is quite simple, just replace the line:
local res_value
by:
local return_val

Cheers,
Álvaro.

-- 
Álvaro M. Valdebenito B., Dr. rer. nat.       alvaro.valdebenito@met.no
Air Pollution Section/Research Department     Tel. +47-2296 3397
Norwegian Meteorological Institute            http:\\www.met.no
P.O. Box 43 Blindern, 0313 Oslo, NORWAY       http:\\www.emep.int/CWF
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