Fix #493 persisting when code-friendly extra enabled due to regex o…

…versight.

Forgot to apply all the same changes to code friendly strong re that I did to regular strong re

lib/markdown2.py

@@ -2334,7 +2334,7 @@ def _do_tg_spoiler(self, text):
 
     _strong_re = re.compile(r"(\*\*|__)(?=\S)(.*\S)\1", re.S)
     _em_re = r"(\*|_)(?=\S)(.*?\S)\1"
-    _code_friendly_strong_re = re.compile(r"\*\*(?=\S)(.+?[*_]*)\*\*", re.S)
+    _code_friendly_strong_re = re.compile(r"\*\*(?=\S)(.*\S)\*\*", re.S)
     _code_friendly_em_re = r"\*(?=\S)(.+?)\*"
     def _do_italics_and_bold(self, text):
         if self.extras.get('middle-word-em', True) is False: