Support request URLs without schema

Test case from Poul T Lomholt <pt@lomholt.com>

http_parser.c

@@ -687,6 +687,9 @@ size_t http_parser_execute (http_parser *parser,
         if (ch == ':') {
           state = s_req_schema_slash;
           break;
+        } else if (ch == '.') {
+          state = s_req_host;
+          break;
         }
 
         goto error;

test.c

@@ -495,6 +495,30 @@ const struct message requests[] =
   ,.body= ""
   }
 
+#define CONNECT_REQUEST 17
+, {.name = "connect request"
+  ,.type= HTTP_REQUEST
+  ,.raw= "CONNECT home.netscape.com:443 HTTP/1.0\r\n"
+         "User-agent: Mozilla/1.1N\r\n"
+         "Proxy-authorization: basic aGVsbG86d29ybGQ=\r\n"
+         "\r\n"
+  ,.should_keep_alive= FALSE
+  ,.message_complete_on_eof= FALSE
+  ,.http_major= 1
+  ,.http_minor= 0
+  ,.method= HTTP_CONNECT
+  ,.query_string= ""
+  ,.fragment= ""
+  ,.request_path= ""
+  ,.request_url= "home.netscape.com:443"
+  ,.num_headers= 2
+  ,.upgrade=0
+  ,.headers= { { "User-agent", "Mozilla/1.1N" }
+             , { "Proxy-authorization", "basic aGVsbG86d29ybGQ=" }
+             }
+  ,.body= ""
+  }
+
 , {.name= NULL } /* sentinel */
 };