examples/curlx: Fix code style

- Add braces around multi-line if statement.

Closes #2096

docs/examples/curlx.c

@@ -537,14 +537,15 @@ int main(int argc, char **argv)
              res = curl_easy_perform(p.curl));
   {
     int result = curl_easy_getinfo(p.curl, CURLINFO_CONTENT_TYPE, &response);
-    if(mimetypeaccept && p.verbose)
+    if(mimetypeaccept && p.verbose) {
       if(!strcmp(mimetypeaccept, response))
         BIO_printf(p.errorbio, "the response has a correct mimetype : %s\n",
                    response);
       else
         BIO_printf(p.errorbio, "the response doesn\'t have an acceptable "
                    "mime type, it is %s instead of %s\n",
                    response, mimetypeaccept);
+    }
   }
 
   /*** code d'erreur si accept mime ***, egalement code return HTTP != 200 ***/