* Fixed memleak on rz_diffchar_new
* extended_arg is not used after line 87
* useless assignment
* use imm not opnd->addr.offset.imm
* fixing usage of op and memleaks related to it
* invalid cc usage on rz_debug_arg_get
* null ptr deref and memleak in gdb_to_rz_profile
* Fixed logic on instruction decoding on amd29k
* Fixed undef negative shift and memleak on mips assembler