Fix missing queue locks

Author: againull

sycl/plugins/level_zero/pi_level_zero.cpp

@@ -7297,6 +7297,7 @@ pi_result piextUSMEnqueueMemset(pi_queue Queue, void *Ptr, pi_int32 Value,
 
   PI_ASSERT(Queue, PI_INVALID_QUEUE);
 
+  std::scoped_lock Lock(Queue->Mutex);
   return enqueueMemFillHelper(
       // TODO: do we need a new command type for USM memset?
       PI_COMMAND_TYPE_MEM_BUFFER_FILL, Queue, Ptr,
@@ -7330,6 +7331,8 @@ pi_result piextUSMEnqueueMemcpy(pi_queue Queue, pi_bool Blocking, void *DstPtr,
 
   PI_ASSERT(Queue, PI_INVALID_QUEUE);
 
+  std::scoped_lock lock(Queue->Mutex);
+
   // Device to Device copies are found to execute slower on copy engine
   // (versus compute engine).
   bool PreferCopyEngine = !IsDevicePointer(Queue->Context, SrcPtr) ||