* modules/crc-x86_64: Remove indentation on lib_SOURCES,
as otherwise it's replaced with libcoreutils_a_SOURCES
rather than the required lib_libcoreutils_a_SOURCES, resulting in:
lib/gnulib.mk:1090: error: libcoreutils_a_SOURCES must be set with '=' before using '+='
lib/gnulib.mk:1090: warning: variable 'libcoreutils_a_SOURCES' is defined but no program or
lib/gnulib.mk:1090: library has 'libcoreutils_a' as canonical name (possible typo)