Fix garbage text output with cmd.exe in GUI mode.

Thanks to Hartmut for pointing me the problem

svn path=/trunk/; revision=14939

reactos/drivers/video/videoprt/videoprt.c

@@ -152,7 +152,7 @@ IntVideoPortAllocateDeviceNumber(VOID)
          DeviceNumber++;
          continue;
       }
-      else if (Status == STATUS_OBJECT_NAME_INVALID)
+      else if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
          break;
       else
       {

reactos/ntoskrnl/ob/namespc.c

@@ -143,12 +143,15 @@ ObOpenObjectByName(IN POBJECT_ATTRIBUTES ObjectAttributes,
 	return Status;
      }
 
-   if (RemainingPath.Buffer != NULL ||
-       Object == NULL)
-     {
-	RtlFreeUnicodeString(&RemainingPath);
-	return STATUS_OBJECT_NAME_INVALID;
-     }
+   if (RemainingPath.Buffer != NULL)
+   {
+      if (wcschr(RemainingPath.Buffer + 1, L'\\') == NULL)
+         return STATUS_OBJECT_NAME_NOT_FOUND;
+      else
+         return STATUS_OBJECT_PATH_NOT_FOUND;
+   }
+   if (Object == NULL)
+      return STATUS_UNSUCCESSFUL;
 
    Status = ObCreateHandle(PsGetCurrentProcess(),
 			   Object,