minor optim: OAuthParameterSet ArrayList size

Author: slandelle

api/src/main/java/org/asynchttpclient/oauth/OAuthSignatureCalculator.java

@@ -122,7 +122,11 @@ else if (scheme.equals("https"))
  * List of all query and form parameters added to this request; needed
  * for calculating request signature
  */
- OAuthParameterSet allParameters = new OAuthParameterSet();
+ int allParametersSize = 5
+ + (userAuth.getKey() != null ? 1 : 0)
+ + (formParams != null ? formParams.size() : 0)
+ + (queryParams != null ? queryParams.size() : 0);
+ OAuthParameterSet allParameters = new OAuthParameterSet(allParametersSize);
 
  // start with standard OAuth parameters we need
  allParameters.add(KEY_OAUTH_CONSUMER_KEY, consumerAuth.getKey());
@@ -203,9 +207,10 @@ protected long generateTimestamp() {
  * when it would occur it'd be harder to track down.
  */
  final static class OAuthParameterSet {
- final private ArrayList<Parameter> allParameters = new ArrayList<>();
+ private final ArrayList<Parameter> allParameters;
 
- public OAuthParameterSet() {
+ public OAuthParameterSet(int size) {
+ allParameters = new ArrayList<>(size);
  }
 
  public OAuthParameterSet add(String key, String value) {