Correct an error that I made where the vtruncbuf was changed back to vinvalbuf, but I incorrectly added the "V_SAVE|V_SAVEMETA" flags. Submitted by:	Luoqi Chen <luoqi@watermarkgroup.com>
Correct an error that I made where the vtruncbuf was changed back
to vinvalbuf, but I incorrectly added the "V_SAVE|V_SAVEMETA" flags.
Submitted by:	Luoqi Chen <luoqi@watermarkgroup.com>

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