Costmetic changes

system/nxplayer/nxplayer_main.c

@@ -198,34 +198,33 @@ static int nxplayer_cmd_play(FAR struct nxplayer_s *pPlayer, char* parg)
    *   -ENOENT    The media file was not found
    */
 
-  if (ret == -ENODEV)
+  switch (-ret)
     {
-      printf("No suitable Audio Device found\n");
+      case OK:
+        break;
+
+      case ENODEV:
+        printf("No suitable Audio Device found\n");
+        break;
+
+      case EBUSY:
+        printf("Audio device busy\n");
+        break;
+
+      case ENOENT:
+        printf("File %s not found\n", parg);
+        break;
+
+      case ENOSYS:
+        printf("Unknown audio format\n");
+        break;
+
+      default:
+        printf("Error playing file: %d\n", -ret);
+        break;
     }
 
-  else if (ret == -EBUSY)
-    {
-      printf("Audio device busy\n");
-    }
-
-  else if (ret == -ENOENT)
-    {
-      printf("File %s not found\n", parg);
-    }
-
-  else if (ret == -ENOSYS)
-    {
-      printf("Unknown audio format\n");
-    }
-
-  if (ret < 0)
-    {
-      return ret;
-    }
-
-  /* File playing successfully */
-
-  return OK;
+  return ret;
 }
 
 /****************************************************************************