move creation of OPCODINFO to only happen once and reuse if necessary; fixes issue with failed opcode redefinition leading to crash
move creation of OPCODINFO to only happen once and reuse if necessary; fixes issue with failed opcode redefinition leading to crash

ketchupok/csound,ketchupok/csound,csound/csound,csound/csound,ketchupok/csound,ketchupok/csound,csound/csound,ketchupok/csound,ketchupok/csound,ketchupok/csound,csound/csound,csound/csound,ketchupok/csound,ketchupok/csound,csound/csound,csound/csound,ketchupok/csound,csound/csound,csound/csound,csound/csound