[3972] Addressed review comments - minor nits.

src/bin/dhcp4/dhcp4_hooks.dox

@@ -231,9 +231,11 @@ packet processing. Hook points that are not specific to packet processing
   argument contains the pointer to the lease being reclaimed. The second
   argument "remove_lease" indicates if the reclaimed leases should be
   removed from the lease database (if true), or their state should be
-  set to "expired-reclaimed" in the lease database. This parameter
+  set to "expired-reclaimed" in the lease database. This argument
   is only used by the callout if it takes responsibility for the lease
-  reclamation, i.e. it sets the "skip" flag to "true".
+  reclamation, i.e. it sets the "skip" flag to "true". The "remove_lease"
+  argument is set to "true" if the "recycle-timer-wait-time" is set
+  to 0 in the server configuration file.
 
 - <b>Skip flag action</b>: if the callout sets the skip flag, the server
   will assume that the callout has fully reclaimed the lease, i.e.

src/bin/dhcp6/dhcp6_hooks.dox

@@ -249,9 +249,11 @@ packet processing. Hook points that are not specific to packet processing
   argument contains the pointer to the lease being reclaimed. The second
   argument "remove_lease" indicates if the reclaimed leases should be
   removed from the lease database (if true), or their state should be
-  set to "expired-reclaimed" in the lease database. This parameter
+  set to "expired-reclaimed" in the lease database. This argument
   is only used by the callout if it takes responsibility for the lease
-  reclamation, i.e. it sets the "skip" flag to "true".
+  reclamation, i.e. it sets the "skip" flag to "true".  The "remove_lease"
+  argument is set to "true" if the "recycle-timer-wait-time" is set
+  to 0 in the server configuration file.
 
 - <b>Skip flag action</b>: if the callout sets the skip flag, the server
   will assume that the callout has fully reclaimed the lease, i.e.

src/lib/dhcpsrv/alloc_engine.cc

@@ -1424,7 +1424,7 @@ AllocEngine::reclaimExpiredLeases4(const size_t max_leases, const uint16_t timeo
     lease_mgr.getExpiredLeases4(leases, max_leases);
 
     // Do not initialize the callout handle until we know if there are any
-    // lease6_expire callouts installed.
+    // lease4_expire callouts installed.
     CalloutHandlePtr callout_handle;
     if (!leases.empty() &&
         HooksManager::getHooksManager().calloutsPresent(Hooks.hook_index_lease4_expire_)) {

src/lib/dhcpsrv/tests/alloc_engine_expiration_unittest.cc

@@ -1159,8 +1159,7 @@ TEST_F(ExpirationAllocEngine6Test, reclaimExpiredLeasesHooksWithSkip) {
 // This test verifies that it is possible to set the timeout for the
 // execution of the lease reclamation routine.
 TEST_F(ExpirationAllocEngine6Test, reclaimExpiredLeasesTimeout) {
-    // For this test to make sense we need significantly more than 30
-    // leases so it is ok if we have 40.
+    // This test needs at least 40 leases to make sense.
     BOOST_STATIC_ASSERT(TEST_LEASES_NUM >= 40);
     // Run with timeout of 60ms.
     testReclaimExpiredLeasesTimeout(60);
@@ -1524,8 +1523,7 @@ TEST_F(ExpirationAllocEngine4Test, reclaimExpiredLeasesHooksWithSkip) {
 // This test verifies that it is possible to set the timeout for the
 // execution of the lease reclamation routine.
 TEST_F(ExpirationAllocEngine4Test, reclaimExpiredLeasesTimeout) {
-    // For this test to make sense we need significantly more than 30
-    // leases so it is ok if we have 40.
+    // This test needs at least 40 leases to make sense.
     BOOST_STATIC_ASSERT(TEST_LEASES_NUM >= 40);
     // Run with timeout of 60ms.
     testReclaimExpiredLeasesTimeout(60);