Fix parameter exception on OSX

pwndbg/config.py

@@ -37,6 +37,11 @@ TYPES = {
     bool: gdb.PARAM_BOOLEAN
 }
 
+def getParam(value):
+    for k,v in TYPES.items():
+        if isinstance(value, k):
+            return v
+
 class Parameter(gdb.Parameter):
 
     def __init__(self, name, default, docstring):
@@ -47,7 +52,7 @@ class Parameter(gdb.Parameter):
         self.show_doc  = docstring + ':'
         super(Parameter, self).__init__(name,
                                         gdb.COMMAND_SUPPORT,
-                                        TYPES[type(default)])
+                                        getParam(default))
         self.value = default
 
         setattr(module, self.name, self)