Typo fix.

(Seems we're missing tests...)

Cython/Compiler/Symtab.py

@@ -2131,7 +2131,7 @@ class CppClassScope(Scope):
             entry = self.declare(name, cname, type, pos, visibility)
         entry.is_variable = 1
         if type.is_cfunction and self.type:
-            if not self.type.get_fused_types:
+            if not self.type.get_fused_types():
                 entry.func_cname = "%s::%s" % (self.type.empty_declaration_code(), cname)
         if name != "this" and (defining or name != "<init>"):
             self.var_entries.append(entry)