Fix VMTest message creation in 32 bits, also duplicated word in comment

nimbus/vm/code_stream.nim

@@ -54,7 +54,7 @@ proc read*(c: var CodeStream, size: int): seq[byte] =
     c.pc = c.bytes.len
 
 proc readVmWord*(c: var CodeStream, n: int): UInt256 =
-  ## Reads `n` bytes bytes from the code stream and pads
+  ## Reads `n` bytes from the code stream and pads
   ## the remaining bytes with zeros.
   let result_bytes = cast[ptr array[32, byte]](addr result)
 

tests/test_vm_json.nim

@@ -58,7 +58,7 @@ proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
   let message = newMessage(
       to = toAddress,
       sender = fexec{"caller"}.getStr.parseAddress,
-      value = cast[uint](fexec{"value"}.getHexadecimalInt).u256, # Cast workaround for negative value
+      value = cast[uint64](fexec{"value"}.getHexadecimalInt).u256, # Cast workaround for negative value
       data = fexec{"data"}.getStr.hexToSeqByte,
       code = code,
       gas = fexec{"gas"}.getHexadecimalInt,