Update gamma.hpp

[kenarab]

Missing name for Lanczos parameter in gamma_imp_final at line 114

It caused an error when compiling at line 124

 std::cout << "tgamma_imp called with " << typeid(z).name() << " " << typeid(l).name() << std::endl;

Checked on old code and the parameter has l name

[mborland]

Can you add a (void)l somewhere? This will cause unused parameter warnings except when printing is enabled.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.83%. Comparing base (024a4fe) to head (41790ee).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1236   +/-   ##
========================================
  Coverage    93.83%   93.83%           
========================================
  Files          657      657           
  Lines        55244    55244           
========================================
  Hits         51840    51840           
  Misses        3404     3404           

Files with missing lines	Coverage Δ
include/boost/math/special_functions/gamma.hpp	92.25% <100.00%> (ø)

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[kenarab]

Added the requested code inside the conditional compilation before debugging code

(void)l;

[mborland]

Added the requested code inside the conditional compilation before debugging code

(void)l;

I added a commit moving it outside of the #if block since thats where it'll cause issues. Sorry if I was not sufficiently clear.

[kenarab]

I'm sorry I'm not familiar with that practice so placed it where as little disruption could cause.

[kenarab]

Next time I see this kind of issue I will do it better

[mborland]

No worries. Thanks for the PR!