Merge pull request #478 from terrelln/wildcopy-ub

Fix execSequence wildcopy undefined behavior

diff --cc lib/decompress/zstd_decompress.c
Simple merge

diff --cc lib/legacy/zstd_v01.c
Simple merge

diff --cc lib/legacy/zstd_v02.c
Simple merge

diff --cc lib/legacy/zstd_v03.c
Simple merge

diff --cc lib/legacy/zstd_v04.c
Simple merge

diff --cc lib/legacy/zstd_v05.c
Simple merge

diff --cc lib/legacy/zstd_v06.c
Simple merge

diff --cc lib/legacy/zstd_v07.c
Simple merge