[PATCH -perfbook] defer/hazptr: Fix markers of final qqz in a series for "nq" builds

Final one needs to be marked by the sequence of:

  \QuickQuizE{ ... }\QuickQuizAnswerE{ ... }\QuickQuizEndE

Fixes: e736a602fdcf ("defer/hazptr: Add steps to move from refctr to hazptr")
Signed-off-by: Akira Yokosawa <[email protected]>
---
Hi Paul,

This will remove extra "," in the box of "QQ 9.11, 9.12, 9.13," of
"nq" builds.

        Thanks, Akira
--
 defer/hazptr.tex | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/defer/hazptr.tex b/defer/hazptr.tex
index 0fd63d78..22fca499 100644
--- a/defer/hazptr.tex
+++ b/defer/hazptr.tex
@@ -398,10 +398,10 @@ and in other publications~\cite{ThomasEHart2007a,McKenney:2013:SDS:2483852.24838
 	operation needs a minimal number of hazard pointers.
 }\QuickQuizEndM
 %
-\QuickQuizM{
+\QuickQuizE{
 	What needs to be done to convert reference-counted code to
 	instead use hazard pointers?
-}\QuickQuizAnswerM{
+}\QuickQuizAnswerE{
 	You will need to:
 	\begin{enumerate}
 	\item	Allocate and deallocate the hazard pointers,
@@ -415,7 +415,7 @@ and in other publications~\cite{ThomasEHart2007a,McKenney:2013:SDS:2483852.24838
 	counters, there is no efficient and scalable way to determine
 	precisely when the number of hazard pointers referencing a given
 	data element has dropped to zero.
-}\QuickQuizEndM
+}\QuickQuizEndE
 }
 
 On June 17, 2023, the ISO C++ Standards committee voted hazard pointers

base-commit: e736a602fdcf8ff57537b2f692a745eb331c74c8
-- 
2.43.0