fix: kronecker memory leaks

Author: artemiipatov

src/GraphBLAS-sharp.Backend/Operations/Kronecker.fs

@@ -224,6 +224,9 @@ module internal Kronecker =
 
             processor.Post(Msg.CreateRunMsg<_, _> kernel)
 
+            rowOffset.Free processor
+            columnOffset.Free processor
+
             (sum.ToHostAndFree processor) + startIndex
 
     let private copyToResult (clContext: ClContext) workGroupSize =
@@ -271,6 +274,9 @@ module internal Kronecker =
 
             processor.Post(Msg.CreateRunMsg<_, _> kernel)
 
+            rowOffset.Free processor
+            columnOffset.Free processor
+
     let private insertZero (clContext: ClContext) workGroupSize =
 
         let copy = copyToResult clContext workGroupSize