[string_resize][bug]fix resize #926

Job	Run time
ubuntu_clang (Release, OFF, ON)	3m 38s
ubuntu_clang (Release, OFF, OFF)	3m 40s
ubuntu_clang (Debug, OFF, ON)	3m 33s
ubuntu_clang (Debug, OFF, OFF)	3m 31s
ubuntu_clang_for_liburing (Release, OFF, ON)	3m 27s
ubuntu_clang_for_liburing (Debug, OFF, ON)	3m 28s
ubuntu_clang_pb (Release, OFF, ON)	2m 48s
ubuntu_clang_pb (Release, OFF, OFF)	2m 56s
ubuntu_clang_pb (Debug, OFF, ON)	3m 5s
ubuntu_clang_pb (Debug, OFF, OFF)	2m 53s
ubuntu_clang10 (Release)	2m 42s
ubuntu_clang10 (Debug)	2m 40s
	38m 21s

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