Fix #186. JPHP array_merge gc bug.
Fix #186. JPHP array_merge gc bug.

jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext,jphp-compiler/develnext