Fix pathological case of empty statement
Fix pathological case of empty statement

Yelp/sqlparse,andialbrecht/sqlparse,payne/sqlparse,benekastah/sqlparse,Yelp/sqlparse,payne/sqlparse,actsasgeek/sqlparse,tailhook/sqlparse,zhongdai/sqlparse,AndiDog/sqlparse,Yelp/sqlparse,zhongdai/sqlparse,actsasgeek/sqlparse,actsasgeek/sqlparse,AndiDog/sqlparse,tailhook/sqlparse,adamgreenhall/sqlparse,vmuriart/sqlparse,payne/sqlparse,zhongdai/sqlparse,tailhook/sqlparse,adamgreenhall/sqlparse,AndiDog/sqlparse,adamgreenhall/sqlparse