remove workaround for issue #523

see discussion here: https://github.com/pwndbg/pwndbg/issues/523

pwndbg/commands/__init__.py

@@ -163,12 +163,7 @@ class Command(gdb.Command):
 
         last_line = lines[-1]
         number_str, command = last_line.split(maxsplit=1)
-        try:
         number = int(number_str)
-        except ValueError:
-            # Workaround for a GDB 8.2 bug when show commands return error value
-            # See issue #523
-            return False
 
         # A new command was entered by the user
         if number not in Command.history: