Fix parse errors in readline module when compiling without threads.

Misc/NEWS

@@ -153,6 +153,8 @@ present).
 Extension Modules
 -----------------
 
+- Fix parse errors in the readline module when compiling without threads.
+
 - Patch #1288833: Removed thread lock from socket.getaddrinfo on
   FreeBSD 5.3 and later versions which got thread-safe getaddrinfo(3).
 

Modules/readline.c

@@ -603,6 +603,7 @@ on_hook(PyObject *func)
 #ifdef WITH_THREAD	      
 		PyGILState_Release(gilstate);
 #endif
+		return result;
 	}
 	return result;
 }
@@ -655,6 +656,7 @@ on_completion(char *text, int state)
 #ifdef WITH_THREAD	      
 		PyGILState_Release(gilstate);
 #endif
+		return result;
 	}
 	return result;
 }