Fix tests after #355

Cython/Compiler/Symtab.py

@@ -1014,6 +1014,8 @@ class ModuleScope(Scope):
         # the non-typedef struct internally to avoid needing forward
         # declarations for anonymous structs. 
         if typedef_flag and visibility != 'extern':
+            if visibility != 'public':
+                warning(pos, "ctypedef only valid for public and extern classes", 2)
             objtypedef_cname = objstruct_cname
             objstruct_cname = None
             typedef_flag = 0

tests/errors/e_ctypedefornot.pyx

@@ -8,16 +8,10 @@ ctypedef struct Blarg:
 
 cdef struct Blarg
 
-cdef class Spam
-
-ctypedef class Spam:
-	pass
-	
 cdef Foo f
 cdef Blarg b
 
 _ERRORS = u"""
 3:0: 'Foo' previously declared using 'cdef'
 9:5: 'Blarg' previously declared using 'ctypedef'
-13:0: 'Spam' previously declared using 'cdef'
 """