rs-client: Cleanup (#1087)

* rs-client: name SpriteBuffer

* rs-client: (re)name spritebuffer methods

* rs-client/deob: Add missed @Export's, make updatemappings fix this next time

* rs-client: run intellij redundant else inspection

* rs-client: invert some script interpreter if's

* deob: checkstyle fixes

* rs-client: SpriteBuffer_loadSprite -> SpriteBuffer_bufferFile

runescape-client/src/main/java/IterableDualNodeQueueIterator.java

@@ -56,9 +56,8 @@ public class IterableDualNodeQueueIterator implements Iterator {
 	public void remove() {
 		if (this.last == null) {
 			throw new IllegalStateException();
-		} else {
-			this.last.removeDual();
-			this.last = null;
 		}
+		this.last.removeDual();
+		this.last = null;
 	}
 }