added back 'in enclosing scope' for free var

Author: iritkatriel

Python/ceval.c

@@ -103,7 +103,8 @@ static int get_exception_handler(PyCodeObject *, int, int*, int*, int*);
 #define UNBOUNDLOCAL_ERROR_MSG \
     "accessed local variable '%.200s' where it is not associated with a value"
 #define UNBOUNDFREE_ERROR_MSG \
-    "accessed free variable '%.200s' where it is not associated with a value"
+    "accessed free variable '%.200s' where it is not associated with a" \
+    " value in enclosing scope"
 
 /* Dynamic execution profile */
 #ifdef DYNAMIC_EXECUTION_PROFILE