ocaml: fix an warning on test_arm64.ml
ocaml: fix an warning on test_arm64.ml

techvoltage/capstone,pyq881120/capstone,NeilBryant/capstone,capturePointer/capstone,07151129/capstone,zneak/capstone,AmesianX/capstone,07151129/capstone,capturePointer/capstone,sigma-random/capstone,bowlofstew/capstone,angelabier1/capstone,pyq881120/capstone,pombredanne/capstone,fvrmatteo/capstone,bughoho/capstone,NeilBryant/capstone,zneak/capstone,capturePointer/capstone,sephiroth99/capstone,07151129/capstone,capturePointer/capstone,zneak/capstone,pyq881120/capstone,bughoho/capstone,pombredanne/capstone,AmesianX/capstone,code4bones/capstone,bowlofstew/capstone,nplanel/capstone,bSr43/capstone,krytarowski/capstone,capturePointer/capstone,07151129/capstone,8l/capstone,dynm/capstone,bowlofstew/capstone,zneak/capstone,zuloloxi/capstone,sigma-random/capstone,sigma-random/capstone,07151129/capstone,AmesianX/capstone,code4bones/capstone,capturePointer/capstone,pranith/capstone,fvrmatteo/capstone,bowlofstew/capstone,pranith/capstone,krytarowski/capstone,bigendiansmalls/capstone,angelabier1/capstone,dynm/capstone,code4bones/capstone,bigendiansmalls/capstone,bSr43/capstone,zuloloxi/capstone,sephiroth99/capstone,8l/capstone,sigma-random/capstone,zuloloxi/capstone,xia0pin9/capstone,bSr43/capstone,angelabier1/capstone,fvrmatteo/capstone,bowlofstew/capstone,pyq881120/capstone,AmesianX/capstone,techvoltage/capstone,pombredanne/capstone,fvrmatteo/capstone,8l/capstone,pyq881120/capstone,8l/capstone,bSr43/capstone,dynm/capstone,AmesianX/capstone,pranith/capstone,bowlofstew/capstone,dynm/capstone,AmesianX/capstone,capturePointer/capstone,krytarowski/capstone,sephiroth99/capstone,pranith/capstone,fvrmatteo/capstone,nplanel/capstone,bughoho/capstone,pombredanne/capstone,zuloloxi/capstone,techvoltage/capstone,techvoltage/capstone,nplanel/capstone,07151129/capstone,xia0pin9/capstone,code4bones/capstone,angelabier1/capstone,fvrmatteo/capstone,dynm/capstone,nplanel/capstone,nplanel/capstone,pombredanne/capstone,NeilBryant/capstone,xia0pin9/capstone,zneak/capstone,nplanel/capstone,NeilBryant/capstone,bigendiansmalls/capstone,pranith/capstone,pyq881120/capstone,bSr43/capstone,krytarowski/capstone,pranith/capstone,nplanel/capstone,dynm/capstone,NeilBryant/capstone,pyq881120/capstone,pombredanne/capstone,bowlofstew/capstone,bughoho/capstone,code4bones/capstone,zuloloxi/capstone,8l/capstone,bSr43/capstone,bSr43/capstone,zneak/capstone,bigendiansmalls/capstone,zneak/capstone,techvoltage/capstone,krytarowski/capstone,sephiroth99/capstone,07151129/capstone,pombredanne/capstone,sigma-random/capstone,xia0pin9/capstone,sephiroth99/capstone,krytarowski/capstone,angelabier1/capstone,zuloloxi/capstone,8l/capstone,bigendiansmalls/capstone,code4bones/capstone,xia0pin9/capstone,bughoho/capstone,bigendiansmalls/capstone,sephiroth99/capstone,sigma-random/capstone,8l/capstone,xia0pin9/capstone,AmesianX/capstone,sephiroth99/capstone,NeilBryant/capstone,xia0pin9/capstone,angelabier1/capstone,techvoltage/capstone,dynm/capstone,bughoho/capstone,code4bones/capstone,sigma-random/capstone,krytarowski/capstone,NeilBryant/capstone,fvrmatteo/capstone,zuloloxi/capstone,angelabier1/capstone,pranith/capstone,bigendiansmalls/capstone,techvoltage/capstone,bughoho/capstone