Fix abstract_typedef C test code

Don't refer to the typedef name (especially with a typo in it...), it is not
supposed to be exported.

Also fix the write() method call: use the right class for it and pass it the
correct arguments.

Examples/test-suite/c/Makefile.in

@@ -45,7 +45,6 @@ FAILING_C_TESTS := \
     unions \
 
 FAILING_CPP_TESTS := \
-    abstract_typedef \
     abstract_typedef2 \
     anonymous_bitfield \
     apply_signed_char \

Examples/test-suite/c/abstract_typedef_runme.c

@@ -4,15 +4,12 @@
 
 int main(int argc, const char *argv[]) {
 	Engine *e = new_Engine();
-	PerseEngine *pe = new_PersEngine();
 	A *a = new_A();
 
-	assert(A_write(e) == true);
-	assert(A_write(pe) == true);
+	assert(AbstractBaseClass_write(a, e) == true);
 
 	delete_A(a);
-	delete_PerseEngine(pe);
 	delete_Engine(e);
 
 	return 0;
-}
+}