Add missing lv2_obj::sleep when joining interrupt thread

rpcs3/Emu/Cell/lv2/sys_interrupt.cpp

@@ -150,6 +150,8 @@ error_code _sys_interrupt_thread_disestablish(ppu_thread& ppu, u32 ih, vm::ptr<u
 		return CELL_ESRCH;
 	}
 
+	lv2_obj::sleep(ppu);
+
 	// Wait for sys_interrupt_thread_eoi() and destroy interrupt thread
 	handler->join();
 

rpcs3/Emu/Cell/lv2/sys_spu.cpp

@@ -1715,6 +1715,7 @@ error_code sys_raw_spu_destroy(ppu_thread& ppu, u32 id)
 			if (auto handler = tag->handler.lock())
 			{
 				// SLEEP
+				lv2_obj::sleep(ppu);
 				handler->join();
 				to_remove.emplace_back(std::move(handler), 0);
 			}