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- Don't cache a value if we might dereference NULL

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- Fix for CID 653

svn path=/trunk/; revision=37848
This commit is contained in:
Stefan Ginsberg 2008-12-04 15:15:01 +00:00
parent 529ad41347
commit 54e241e287
1 changed files with 3 additions and 2 deletions
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5
reactos/lib/rtl/unicodeprefix.c
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@ -465,13 +465,14 @@ RtlNextUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
BOOLEAN Restart)
{
PRTL_SPLAY_LINKS SplayLinks;
PUNICODE_PREFIX_TABLE_ENTRY Entry, CaseMatchEntry;
PUNICODE_PREFIX_TABLE_ENTRY Entry, CaseMatchEntry = NULL;
DPRINT("RtlNextUnicodePrefix(): Table %p Restart %b\n",
PrefixTable, Restart);
/* We might need this entry 2/3rd of the time, so cache it now */
CaseMatchEntry = PrefixTable->LastNextEntry->CaseMatch;
if (PrefixTable->LastNextEntry)
CaseMatchEntry = PrefixTable->LastNextEntry->CaseMatch;
/* Check if this is a restart or if we don't have a last entry */
if ((Restart) || !(PrefixTable->LastNextEntry))