Build: Enable -Wimplicit-fallthrough on clang (#25056)

* Misc: Use [[fallthrough]] attribute instead of comment to mark intentional fallthroughs

Related: #25006

* Misc: Add some missing breaks (no-ops) to satisfy clang

Related: #25006
Closes #25055

* Build: Enable -Wimplicit-fallthrough on clang

Closes #25006

2 files changed, 4 insertions, 0 deletions

diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/npc_arthas.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/npc_arthas.cpp
index a166c9632d0..e78cdd74b11 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/npc_arthas.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/npc_arthas.cpp
@@ -1485,6 +1485,7 @@ public:
                             chromie->AI()->Talk(RP5_LINE_CHROMIE0);
                             chromie->SetFlag(UNIT_NPC_FLAGS, UNIT_NPC_FLAG_GOSSIP | UNIT_NPC_FLAG_QUESTGIVER);
                         }
+                        break;
                     default:
                         break;
                 }
diff --git a/src/server/scripts/Kalimdor/zone_bloodmyst_isle.cpp b/src/server/scripts/Kalimdor/zone_bloodmyst_isle.cpp
index 890833dadcd..450be7bb1de 100644
--- a/src/server/scripts/Kalimdor/zone_bloodmyst_isle.cpp
+++ b/src/server/scripts/Kalimdor/zone_bloodmyst_isle.cpp
@@ -333,8 +333,11 @@ public:
                     std::list<Creature*> creatureList;
                     GetCreatureListWithEntryInGrid(creatureList, me, NPC_BLOODMYST_TESLA_COIL, 500.0f);
                     if (!creatureList.empty())
+                    {
                         for (std::list<Creature*>::iterator itr = creatureList.begin(); itr != creatureList.end(); ++itr)
                             (*itr)->InterruptNonMeleeSpells(true, SPELL_BLOODMYST_TESLA);
+                    }
+                    break;
                 }
                 default:
                     break;