fix deprecation warning for stopiteration

jenshnielsen · jenshnielsen · commit 80ddcfe76075 · 2016-08-16T13:56:17.000+01:00
see pep 479 https://www.python.org/dev/peps/pep-0479/
diff --git a/lib/matplotlib/type1font.py b/lib/matplotlib/type1font.py
@@ -306,8 +306,7 @@ def suppress(tokens):
                  b'/FontMatrix': replace(fontmatrix),
                  b'/UniqueID': suppress}
 
-        while True:
-            token, value = next(tokens)
+        for token, value in tokens:
             if token is cls._name and value in table:
                 for value in table[value](itertools.chain([(token, value)],
                                                           tokens)):
