Fixed various memory leaks and enabled memory tracking for debug builds.

git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@571 0109f412-320b-0410-ab79-c3e0c5ffbbe6

flaim/src/scache.cpp

@@ -6137,10 +6137,14 @@ RCODE ScaGetBlock(
 	FFILE *				pFile = pDb->pFile;
 	FLMBOOL				bGotFromDisk = FALSE;
 
-	flmAssert( uiBlkAddress != 0);
-
 	*ppSCacheRV = NULL;
 
+	if( !uiBlkAddress)
+	{
+		rc = RC_SET_AND_ASSERT( FERR_ILLEGAL_OP);
+		goto Exit;
+	}
+
 	// We should NEVER be attempting to read a block address that is
 	// beyond the current logical end of file.