Use bytecode as CODESIZE

mythril/disassembler/disassembly.py

@@ -11,6 +11,7 @@ class Disassembly:
         self.xrefs = []
         self.func_to_addr = {}
         self.addr_to_func = {}
+        self.bytecode = code
 
         try:
             mythril_dir = os.environ['MYTHRIL_DIR']

mythril/laser/ethereum/svm.py

@@ -635,7 +635,7 @@ class LaserEVM:
                 state.stack.append(environment.sender)
 
             elif op == 'CODESIZE':
-                state.stack.append(len(disassembly.instruction_list))
+                state.stack.append(len(disassembly.bytecode) // 2)
 
             if op == 'SHA3':
                 op0, op1 = state.stack.pop(), state.stack.pop()