Fixed doctests

Author: richpl

flowsignal.py

@@ -21,12 +21,14 @@
 return address need to be added to the return stack.
 
 >>> flowsignal = FlowSignal(ftype=FlowSignal.RETURN)
->>> print(flowsignal.ftarget)
--1
+>>> flowsignal.ftarget is None
+True
+>>> flowsignal.ftype
+5
 >>> flowsignal = FlowSignal(ftarget=100, ftype=FlowSignal.SIMPLE_JUMP)
->>> print(flowsignal.ftarget)
+>>> flowsignal.ftarget
 100
->>> print(flowsignal.ftype)
+>>> flowsignal.ftype
 0
 """
 
@@ -123,3 +125,4 @@ def __init__(self, ftarget=None, ftype=SIMPLE_JUMP, floop_var=None):
         self.ftarget = ftarget
 
         self.floop_var = floop_var
+