gvisor: sharedmem_server_test: remove duplicate check.

PiperOrigin-RevId: 834981946

Author: parth-opensrc

pkg/tcpip/link/sharedmem/sharedmem_server_test.go

@@ -367,7 +367,7 @@ func TestClientBulkTransfer(t *testing.T) {
 			}
 			defer l.Close()
 			const chunkSize = 4 << 20 // 4 MiB
-			var responseString = strings.Repeat("r", chunkSize)
+			responseString := strings.Repeat("r", chunkSize)
 			go func() {
 				http.Serve(l, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 					for done := 0; done < payloadSize; {
@@ -385,9 +385,6 @@ func TestClientBulkTransfer(t *testing.T) {
 			if err != nil {
 				t.Fatalf("httpClient.Get(\"/\") failed: %s", err)
 			}
-			if err != nil {
-				t.Fatalf("httpClient.Get(\"/\") failed: %s", err)
-			}
 			if got, want := response.StatusCode, http.StatusOK; got != want {
 				t.Fatalf("unexpected status code got: %d, want: %d", got, want)
 			}