parseurlandfillconn: does an 'else' please mr compiler?

Attempt to address this:

url.c: In function ‘Curl_connect’:
url.c:1883:13: error: offset outside bounds of constant string [-Werror]
     hostname++;
             ^

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/url.c b/lib/url.c
index e4c47930a..43b7b1be1 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -1874,7 +1874,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
     /* this is for file:// transfers, get a dummy made */
     hostname = (char *)"";
 
-  if(hostname[0] == '[') {
+  else if(hostname[0] == '[') {
     /* This looks like an IPv6 address literal. See if there is an address
        scope. */
     size_t hlen;