[cppcheck-fix][memory-leak]
[cppcheck-fix][memory-leak]

Fix cppcheck-1.57 issue :
[src/AlienImage/AlienImage_GIFLZWDict.cxx:781]: (error) Memory leak: cht

mathstuf/oce,tpaviot/oce,Tech-XCorp/oce,Tech-XCorp/oce,Tridify/oce,BenoitPerrot/oce,Tridify/oce,finetjul/oce,finetjul/oce,BenoitPerrot/oce,finetjul/oce,mathstuf/oce,Tridify/oce,Tridify/oce,heartvalve/oce,EvgeneOskin/oce,heartvalve/oce,EvgeneOskin/oce,BenoitPerrot/oce,BenoitPerrot/oce,finetjul/oce,mathstuf/oce,Tech-XCorp/oce,BenoitPerrot/oce,EvgeneOskin/oce,tpaviot/oce,Tridify/oce,Tech-XCorp/oce,Tech-XCorp/oce,heartvalve/oce,mathstuf/oce,mathstuf/oce,heartvalve/oce,tpaviot/oce,EvgeneOskin/oce,EvgeneOskin/oce,tpaviot/oce,tpaviot/oce,heartvalve/oce,finetjul/oce