monkey-see-monkey-do: Don't use personal address decoder

Fix what looks like a typo but was in fact a use of a personal
wrapper around addr2line, to simply use addr2line.

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

test/monkey-see-monkey-do

@@ -32,7 +32,7 @@ def decode_trace(s):
         caps = addr_re.findall(l);
         if caps:
             return getoutput(
-                "addar2line -e {} {} 2>/dev/null || echo './nsmonkey(+{})'".format(
+                "addr2line -e {} {} 2>/dev/null || echo './nsmonkey(+{})'".format(
                     MONKEY_PATH, caps[0], caps[0]))
         else:
             return l