Added some decompilers and decompile and disassemble async

src/org/fife/ui/rsyntaxtextarea/TokenMakerBase.java

@@ -108,6 +108,7 @@ public abstract class TokenMakerBase implements TokenMaker {
 			currentToken = firstToken; // previous token is still null.
 		} else {
 			TokenImpl next = tokenFactory.createToken(array, start, end, startOffset, tokenType);
+			if(currentToken == null || next == null ) return;
 			currentToken.setNextToken(next);
 			previousToken = currentToken;
 			currentToken = next;