[CSRSRV] CsrGetProcessLuid(): Check 1st NtQueryInformationToken() result too (#2857)

Detected by Cppcheck: redundantAssignment.
Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>

subsystems/win32/csrsrv/procsup.c

@@ -873,6 +873,12 @@ CsrGetProcessLuid(IN HANDLE hProcess OPTIONAL,
                                      NULL,
                                      0,
                                      &Length);
+    if (Status != STATUS_BUFFER_TOO_SMALL)
+    {
+        /* Close the token and fail */
+        NtClose(hToken);
+        return Status;
+    }
 
     /* Allocate memory for the Token Info */
     if (!(TokenStats = RtlAllocateHeap(CsrHeap, 0, Length)))