[NTFS] Don't dereference NULL IRP

CID 1427057

diff --git a/drivers/filesystems/ntfs/rw.c b/drivers/filesystems/ntfs/rw.c
index 94d05de..038caa4 100644 (file)
--- a/drivers/filesystems/ntfs/rw.c
+++ b/drivers/filesystems/ntfs/rw.c
@@ -545,6 +545,9 @@ NtfsWrite(PNTFS_IRP_CONTEXT IrpContext)
     DPRINT("NtfsWrite(IrpContext %p)\n", IrpContext);
     ASSERT(IrpContext);
 
+    // get the I/O request packet
+    Irp = IrpContext->Irp;
+
     // This request is not allowed on the main device object
     if (IrpContext->DeviceObject == NtfsGlobalData->DeviceObject)
     {
@@ -554,9 +557,6 @@ NtfsWrite(PNTFS_IRP_CONTEXT IrpContext)
         return STATUS_INVALID_DEVICE_REQUEST;
     }
 
-    // get the I/O request packet
-    Irp = IrpContext->Irp;
-
     // get the File control block
     Fcb = (PNTFS_FCB)IrpContext->FileObject->FsContext;
     ASSERT(Fcb);