Refactor integration test DecodeJSON calls to use generic return value (#37432)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <2114189+wxiaoguang@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tests/integration/api_repo_license_test.go

@@ -74,8 +74,7 @@ func checkRepoLicense(t *testing.T, owner, repo string, expected []string) {
 	req := NewRequest(t, "GET", reqURL)
 	resp := MakeRequest(t, req, http.StatusOK)
 
-	var licenses []string
-	DecodeJSON(t, resp, &licenses)
+	licenses := DecodeJSON(t, resp, []string{})
 
 	assert.ElementsMatch(t, expected, licenses, 0)
 }