Context Navigation

Changes between Initial Version and Version 1 of Ticket #16834

-              initial
+              v1
 Function VGDrvCommonIoCtl in src/VBox/Additions/common/VBoxGuest/VBoxGuest.cpp is checking to see if pcbDataReturned is NULL and then setting it to zero, thus the code assumes there is a potential for the pointer to be NULL.  However, later in the function we have:
+{{{
             case VBOXGUEST_IOCTL_GUEST_CAPS_ACQUIRE:
                 CHECKRET_SIZE("GUEST_CAPS_ACQUIRE", sizeof(VBoxGuestCapsAquire));
 …
                 *pcbDataReturned = sizeof(VBoxGuestCapsAquire);
                 break;
+}}}
 and this dereferencing the pointer that could potentially be zero.