Update Mlucas.c (SH residue fix) #132

Job	Run time
ThreadSanitizer Linux (clang)	38s
Mlucas Linux (ubuntu-20.04, gcc)	40m 26s
Clang-Tidy	5m 14s
Mlucas Linux (ubuntu-20.04, clang)	37m 35s
AddressSanitizer Linux (gcc)	16m 40s
Cppcheck	5m 11s
AddressSanitizer Linux (clang)	50m 35s
Mlucas Linux (ubuntu-22.04, gcc)	40m 34s
GCC analyzer	14m 59s
Mlucas Linux (ubuntu-22.04, clang)	37m 45s
Mlucas macOS (macos-11)	1h 6m 18s
ShellCheck	3s
Mlucas macOS (macos-12)	1h 3m 59s
Mlucas macOS (macos-13)	32m 54s
AddressSanitizer macOS	10m 7s
AddressSanitizer Windows	30m 11s
Mlucas macOS (macos-14)	49m 17s
ThreadSanitizer macOS	0s
Windows (gcc)	20m 9s
Windows (clang)	14m 10s
	8h 56m 45s

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