fix error on invalid request line

src/parseRequest.ar

@@ -7,6 +7,8 @@ let parse(conn) = do
     let inBody = false
     let split = headerData.to("string").split("\r\n")
     let requestLine = split[0].split(" ")
+    if (requestLine.length != 3) do
+        throwError("requestError","Invalid request line")
     let method = requestLine[0]
     let path = requestLine[1]
     let version = requestLine[2]