[string_resize][bug]fix resize #927

Job	Run time
ubuntu_clang_for_liburing (Release, OFF, ON)	2m 58s
ubuntu_clang (Release, OFF, ON)	3m 3s
ubuntu_clang_for_liburing (Debug, OFF, ON)	3m 29s
ubuntu_clang_pb (Release, OFF, ON)	3m 11s
ubuntu_clang10 (Release)	2m 39s
ubuntu_clang (Release, OFF, OFF)	2m 59s
ubuntu_clang_pb (Release, OFF, OFF)	2m 50s
ubuntu_clang10 (Debug)	2m 37s
ubuntu_clang (Debug, OFF, ON)	3m 6s
ubuntu_clang_pb (Debug, OFF, ON)	2m 59s
ubuntu_clang (Debug, OFF, OFF)	3m 6s
ubuntu_clang_pb (Debug, OFF, OFF)	2m 50s
	35m 47s

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