Fix bug in heap translation #165

Job	Run time
build-test (ubuntu-latest, gcc, amd64)	20m 35s
build-test (ubuntu-latest, gcc, c)	25m 9s
build-test (ubuntu-latest, clang, amd64)	21m 12s
build-test (ubuntu-latest, clang, c)	29m 43s
build-test (ubuntu-latest, clang, llvm)	31m 33s
build-test (macos-13, gcc, amd64)	45m 47s
build-test (macos-13, gcc, c)	53m 51s
build-test (macos-13, clang, amd64)	45m 52s
build-test (macos-13, clang, c)	49m 15s
build-test (macos-13, clang, llvm)	52m 2s
build-test (windows-latest, gcc, amd64)	42m 0s
	6h 56m 59s

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