ksys/phys: Mark RigidBody::m9 as pure virtual

src/KingSystem/Physics/RigidBody/TeraMesh/physTeraMeshRigidBody.h

@@ -8,6 +8,8 @@ namespace ksys::phys {
 class TeraMeshRigidBody : public RigidBody {
 public:
     TeraMeshRigidBody(hkpRigidBody* hk_body, sead::Heap* heap);
+
+    void m9() override;
 };
 
 }  // namespace ksys::phys

src/KingSystem/Physics/RigidBody/physRigidBody.h

@@ -118,7 +118,6 @@ public:
               const sead::SafeString& name, sead::Heap* heap, bool a7);
     ~RigidBody() override;
 
-    // FIXME: types and names
     virtual float m4();
 
     bool initMotionAccessorForDynamicMotion(sead::Heap* heap);
@@ -360,8 +359,7 @@ public:
     void setEntityMotionFlag200(bool set);
     bool isEntityMotionFlag200On() const;
 
-    // FIXME: should be pure
-    virtual void m9();
+    virtual void m9() = 0;
     virtual void* m10();
     virtual void* m11();
     virtual float m12(float x, float y);