Merge pull request CEED#1665 from CEED/jrwrigh/fix_sycl_diag

fix(sycl): Use CeedSize value in LinearAssembleQF

backends/sycl-ref/ceed-sycl-ref-operator.sycl.cpp

@@ -553,8 +553,7 @@ static inline int CeedOperatorLinearAssembleQFunctionCore_Sycl(CeedOperator op,
     CeedInt  strides[3] = {1, num_elem * Q, Q}; /* *NOPAD* */
 
     // Create output restriction
-    CeedCallBackend(CeedElemRestrictionCreateStrided(ceed_parent, num_elem, Q, num_active_in * num_active_out,
-                                                     num_active_in * num_active_out * num_elem * Q, strides, rstr));
+    CeedCallBackend(CeedElemRestrictionCreateStrided(ceed_parent, num_elem, Q, num_active_in * num_active_out, l_size, strides, rstr));
     // Create assembled vector
     CeedCallBackend(CeedVectorCreate(ceed_parent, l_size, assembled));
   }