android: simplify as lint suggested

android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/AbstractMediaPlayer.java

@@ -95,15 +95,11 @@ public abstract class AbstractMediaPlayer implements IMediaPlayer {
     }
 
     protected final boolean notifyOnError(int what, int extra) {
-        if (mOnErrorListener != null)
-            return mOnErrorListener.onError(this, what, extra);
-        return false;
+        return mOnErrorListener != null && mOnErrorListener.onError(this, what, extra);
     }
 
     protected final boolean notifyOnInfo(int what, int extra) {
-        if (mOnInfoListener != null)
-            return mOnInfoListener.onInfo(this, what, extra);
-        return false;
+        return mOnInfoListener != null && mOnInfoListener.onInfo(this, what, extra);
     }
 
     public void setDataSource(IMediaDataSource mediaDataSource) {

android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/AndroidMediaPlayer.java

@@ -359,19 +359,15 @@ public class AndroidMediaPlayer extends AbstractMediaPlayer {
         @Override
         public boolean onInfo(MediaPlayer mp, int what, int extra) {
             AndroidMediaPlayer self = mWeakMediaPlayer.get();
-            if (self == null)
-                return false;
+            return self != null && notifyOnInfo(what, extra);
 
-            return notifyOnInfo(what, extra);
         }
 
         @Override
         public boolean onError(MediaPlayer mp, int what, int extra) {
             AndroidMediaPlayer self = mWeakMediaPlayer.get();
-            if (self == null)
-                return false;
+            return self != null && notifyOnError(what, extra);
 
-            return notifyOnError(what, extra);
         }
 
         @Override