scripted-diff: Replace CCriticalSection with RecursiveMutex

-BEGIN VERIFY SCRIPT-
 # Delete outdated alias for RecursiveMutex
 sed -i -e '/CCriticalSection/d'                 ./src/sync.h
 # Replace use of outdated alias with RecursiveMutex
 sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-

src/interfaces/chain.cpp

@@ -38,7 +38,7 @@
 namespace interfaces {
 namespace {
 
-class LockImpl : public Chain::Lock, public UniqueLock<CCriticalSection>
+class LockImpl : public Chain::Lock, public UniqueLock<RecursiveMutex>
 {
     Optional<int> getHeight() override
     {