[3/3] windowscodecs: Use memmove in StreamOnMemory::Read and StreamOnMemory::Write to cope with potentially overlapped memory copying.

[Andrew Nguyen]

Spotted with Valgrind.
---
 dlls/windowscodecs/stream.c       |    4 +-
 dlls/windowscodecs/tests/stream.c |   50 ++++++++++++++++++++++++++++++++++++-
 2 files changed, 51 insertions(+), 3 deletions(-)


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