[PATCH 7/7] msi: Free the temp buffer if we haven't assigned it to *appValue.

[James Hawkins]

Fixes several valgrind errors of the form:

96 bytes in 1 blocks are definitely lost
    at  notify_alloc (heap.c:247)
    by  RtlAllocateHeap (heap.c:1697)
    by  msi_alloc (msipriv.h:1079)
    by  ACTION_RecurseSearchDirectory (appsearch.c:756)
    by  ACTION_SearchDirectory (appsearch.c:865)
    by  ACTION_AppSearchDr (appsearch.c:991)
    by  ACTION_AppSearchSigName (appsearch.c:1017)
---
 dlls/msi/appsearch.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
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