Update types_base.py

fix tests on 3.7

mastodon/types_base.py

@@ -406,11 +406,11 @@ def try_cast_recurse(t, value, union_specializer=None):
             try:
                 # If the new robust method doesn't work, try the old and less robust method
                 value._mastopy_type = repr(save_type).replace("mastodon.return_types.", "").replace("mastodon.types_base.", "")
-                if value._mastopy_type.startswith("<class '") and value._mastopy_type.endswith("'>"):
-                    value._mastopy_type = value._mastopy_type[8:-2]
             except:
                 # Failures are silently ignored. We care about maximum not breaking here.
                 pass
+        if value._mastopy_type.startswith("<class '") and value._mastopy_type.endswith("'>"):
+            value._mastopy_type = value._mastopy_type[8:-2]
     return value
 
 class Entity():