[pschweitzer] 71160: [FREELDR] Cherrypick r71159

Author: pschweitzer
Date: Thu Apr 14 20:42:12 2016
New Revision: 71160

URL: http://svn.reactos.org/svn/reactos?rev=71160&view=rev
Log:
[FREELDR]
Cherrypick r71159

Modified:
    trunk/reactos/boot/freeldr/freeldr/lib/fs/ntfs.c

Modified: trunk/reactos/boot/freeldr/freeldr/lib/fs/ntfs.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/lib/fs...
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/lib/fs/ntfs.c	[iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/lib/fs/ntfs.c	[iso-8859-1] Thu Apr 14 20:42:12 2016
@@ -302,8 +302,8 @@

ReadLength = (ULONG)min(DataRunLength * Volume->ClusterSize - (Offset - CurrentOffset), Length);
     if (DataRunStartLCN == -1)
-    RtlZeroMemory(Buffer, ReadLength);
-    if (NtfsDiskRead(Volume, DataRunStartLCN * Volume->ClusterSize + Offset - CurrentOffset, ReadLength, Buffer))
+        RtlZeroMemory(Buffer, ReadLength);
+    if (DataRunStartLCN == -1 || NtfsDiskRead(Volume, DataRunStartLCN * Volume->ClusterSize + Offset - CurrentOffset, ReadLength, Buffer))
     {
         Length -= ReadLength;
         Buffer += ReadLength;