fix the last few warnings #251

Job	Run time
macos-gcc (9, ON, Xcode, 11)	7m 11s
macos-gcc (9, ON, Xcode, 17)	9m 48s
macos-gcc (9, ON, Ninja Multi-Config, 11)	4m 50s
macos-gcc (9, ON, Ninja Multi-Config, 17)	5m 18s
macos-gcc (9, OFF, Xcode, 11)	7m 41s
macos-gcc (9, OFF, Xcode, 17)	8m 25s
macos-gcc (9, OFF, Ninja Multi-Config, 11)	5m 30s
macos-gcc (9, OFF, Ninja Multi-Config, 17)	5m 21s
macos-gcc (11, ON, Xcode, 11)	6m 53s
macos-gcc (11, ON, Xcode, 17)	7m 21s
macos-gcc (11, ON, Ninja Multi-Config, 11)	5m 18s
macos-gcc (11, ON, Ninja Multi-Config, 17)	4m 57s
macos-gcc (11, OFF, Xcode, 11)	10m 13s
macos-gcc (11, OFF, Xcode, 17)	8m 8s
macos-gcc (11, OFF, Ninja Multi-Config, 11)	5m 23s
macos-gcc (11, OFF, Ninja Multi-Config, 17)	4m 34s
	1h 46m 51s

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