Fix a minor concurrency issue during the setup for processing escape functions.
Fix a minor concurrency issue during the setup for processing
escape functions.

Pierre Queinnec

rjmac/pgjdbc,marschall/pgjdbc,phillipross/pgjdbc,ekoontz/pgjdbc,whitingjr/pgjdbc,phillipross/pgjdbc,amozhenin/pgjdbc,pgjdbc/pgjdbc,rjmac/pgjdbc,alexismeneses/pgjdbc,marschall/pgjdbc,whitingjr/pgjdbc,sehrope/pgjdbc,tivv/pgjdbc,lordnelson/pgjdbc,panchenko/pgjdbc,jorsol/pgjdbc,rjmac/pgjdbc,lordnelson/pgjdbc,amozhenin/pgjdbc,Gordiychuk/pgjdbc,jamesthomp/pgjdbc,AlexElin/pgjdbc,zapov/pgjdbc,panchenko/pgjdbc,ekoontz/pgjdbc,marschall/pgjdbc,bocap/pgjdbc,pgjdbc/pgjdbc,underyx/pgjdbc,golovnin/pgjdbc,alexismeneses/pgjdbc,jamesthomp/pgjdbc,thkoch2001/libpostgresql-jdbc-java,underyx/pgjdbc,pgjdbc/pgjdbc,sehrope/pgjdbc,bocap/pgjdbc,jkutner/pgjdbc,thkoch2001/libpostgresql-jdbc-java,pgjdbc/pgjdbc,Gordiychuk/pgjdbc,sehrope/pgjdbc,phillipross/pgjdbc,jorsol/pgjdbc,lonnyj/pgjdbc,davecramer/pgjdbc,davecramer/pgjdbc,lordnelson/pgjdbc,schlosna/pgjdbc,jorsol/pgjdbc,zemian/pgjdbc,schlosna/pgjdbc,tivv/pgjdbc,lonnyj/pgjdbc,thkoch2001/libpostgresql-jdbc-java,bocap/pgjdbc,davecramer/pgjdbc,whitingjr/pgjdbc,sehrope/pgjdbc,AlexElin/pgjdbc,jamesthomp/pgjdbc,zapov/pgjdbc,underyx/pgjdbc,golovnin/pgjdbc,Gordiychuk/pgjdbc,marschall/pgjdbc,jkutner/pgjdbc,zemian/pgjdbc,zapov/pgjdbc,jkutner/pgjdbc,zemian/pgjdbc,davecramer/pgjdbc,AlexElin/pgjdbc,amozhenin/pgjdbc,jorsol/pgjdbc,panchenko/pgjdbc,golovnin/pgjdbc