[offload-arch] Fix warnings
This patch fixes:
clang/tools/offload-arch/LevelZeroArch.cpp:94:1: error: extra ';'
outside of a function is incompatible with C++98
[-Werror,-Wc++98-compat-extra-semi]
clang/tools/offload-arch/LevelZeroArch.cpp:95:1: error: extra ';'
outside of a function is incompatible with C++98
[-Werror,-Wc++98-compat-extra-semi]
clang/tools/offload-arch/LevelZeroArch.cpp:96:1: error: extra ';'
outside of a function is incompatible with C++98
[-Werror,-Wc++98-compat-extra-semi]
clang/tools/offload-arch/LevelZeroArch.cpp:173:55: error: missing
field 'type' initializer [-Werror,-Wmissing-field-initializers]
