tests: Minor code improvement #488

Job	Run time
msys2/mingw (boost v1.81.0) (tls: ON) (shared: OFF)	27m 39s
msys2/mingw (boost v1.81.0) (tls: OFF) (shared: OFF)	14m 21s
msys2/mingw (boost v1.82.0) (tls: ON) (shared: OFF)	31m 11s
msys2/mingw (boost v1.82.0) (tls: OFF) (shared: OFF)	15m 43s
msys2/mingw (boost v1.83.0) (tls: ON) (shared: OFF)	31m 23s
msys2/mingw (boost v1.83.0) (tls: OFF) (shared: OFF)	15m 42s
msys2/mingw (boost v1.84.0) (tls: ON) (shared: OFF)	28m 45s
msys2/mingw (boost v1.84.0) (tls: OFF) (shared: OFF)	15m 12s
msys2/mingw (boost v1.85.0) (tls: ON) (shared: OFF)	28m 10s
msys2/mingw (boost v1.85.0) (tls: OFF) (shared: OFF)	14m 9s
msys2/mingw (boost v1.86.0) (tls: ON) (shared: OFF)	30m 1s
msys2/mingw (boost v1.86.0) (tls: OFF) (shared: OFF)	15m 15s
msys2/mingw (boost v1.87.0) (tls: ON) (shared: OFF)	30m 49s
msys2/mingw (boost v1.87.0) (tls: OFF) (shared: OFF)	15m 10s
	5h 13m 30s

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