pkg/53771: digest keccak.c does not compile on IRIX with mipspro compiler

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>Number:         53771
>Category:       pkg
>Synopsis:       digest keccak.c does not compile on IRIX with mipspro compiler
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 10 06:45:00 +0000 2018
>Originator:     Erno Palonheimo
>Release:        current-20181201
>Organization:
>Environment:
IRIX64 arpakuutio 6.5 07202013 IP30 mips

>Description:
keccak.c of digest package has this preprocessor macro:

#define	FOR5(X, STMT) do						      \
{									      \
	(X) = 0; (STMT);						      \
	(X) = 1; (STMT);						      \
	(X) = 2; (STMT);						      \
	(X) = 3; (STMT);						      \
	(X) = 4; (STMT);						      \
} while (0)

It results in code that has a gcc-specific syntax and Mipspro won't compile it.
>How-To-Repeat:
Try to build digest on IRIX using Mipspro.
>Fix:
Discussion on Freenode #pkgsrc revealed that this could possibly be worked around by changing the (STMT) on the macro to {STMT} as suggested by Rhialto. I changed the file manually and at least the compiler compiled it and the digest command works now. If further help in testing this on IRIX is needed, I can run tests on the machine.