appendix/questions: Add missing NBSPs

Signed-off-by SeongJae Park <[email protected]>

---
 appendix/questions/after.tex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

appendix/questions/after.tex +2 -2

index cbba768dd443..e648667614a4 100644
@@ -184,13 +184,13 @@ SMP code?
 Simply use SMP primitives as designed.
 
 In this example, the easiest fix is to use locking, for example,
-acquire a lock in the producer before line 10 in
+acquire a lock in the producer before line~10 in
 Figure~\ref{fig:app:questions:After Producer Function} and in
 the consumer before line~13 in
 Figure~\ref{fig:app:questions:After Consumer Function}.
 This lock must also be released after line~13 in
 Figure~\ref{fig:app:questions:After Producer Function} and
-after line 17 in
+after line~17 in
 Figure~\ref{fig:app:questions:After Consumer Function}.
 These locks cause the code segments in lines~10-13 of
 Figure~\ref{fig:app:questions:After Producer Function} and in lines~13-17 of

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