jasm incorrectly processes the instruction pair: ldc MethodHandle

https://github.com/openjdk/asmtools/pull/17 introduced the regression in precessing instruction "ldc MethodHandle":

The latest patch fixes `ldc Dynamic` but breaks `ldc MethodHandle`.
Provided *.jasm file is successfully assembled with asmtools built
from the `pull/15` branch but failed to be assembled with asmtools
built from `pull/17` branch.

The error message is as follows:

TestLdcMethodHandle.jasm (17:42) Error: Wrong tag: Either Method or
InterfaceMethod expected.
                ldc MethodHandle REF_invokeStatic:Method
TestLdcMethodHandle.main:"([Ljava/lang/String;)V";
                                                            ^
1 error