Fix memory bugs in offload #92

Job	Run time
macos (macOS-GCC11-NoMPI-Real)	1m 57s
spack-centos-stream (GCC11-NoMPI-Debug-Real)	1m 47s
linux (GCC9-NoMPI-Debug-Real)	1m 50s
spack-centos-stream (GCC11-NoMPI-NoOMP-Real)	1m 46s
linux (GCC9-NoMPI-NoOMP-Real)	1m 47s
spack-centos-stream (GCC11-NoMPI-NoOMP-Complex)	1m 48s
linux (GCC9-NoMPI-NoOMP-Complex)	1m 50s
spack-centos-stream (GCC11-NoMPI-Sandbox-Real)	1m 46s
linux (GCC9-NoMPI-Sandbox-Real)	1m 48s
linux (GCC9-MPI-Gcov-Real)	1m 49s
linux (GCC9-MPI-Gcov-Complex)	1m 49s
linux (GCC11-NoMPI-Werror-Real)	1m 52s
linux (GCC11-NoMPI-Werror-Complex)	1m 49s
linux (GCC11-NoMPI-Werror-Real-Mixed)	1m 52s
linux (GCC11-NoMPI-Werror-Complex-Mixed)	1m 48s
linux (Clang14-NoMPI-ASan-Real)	2m 43s
linux (Clang14-NoMPI-ASan-Complex)	1m 51s
linux (Clang14-NoMPI-UBSan-Real)	1m 50s
linux (Clang16-NoMPI-Offload-Real)	1m 52s
	35m 34s

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