!5557 [MS][LITE][Develop] fix bug of arm cpu int8 op: pooling memory leak

Merge pull request !5557 from yangruoqi713/r0.7

mindspore/lite/src/runtime/kernel/arm/base/pooling_base.cc

@@ -58,6 +58,7 @@ void PoolingBaseCPUKernel::FreeQuantParam() {
         free(*(pooling_quant_arg_ + i));
       }
     }
+    free(pooling_quant_arg_);
   }
 }