ngx_strcasecmp()/ngx_strncasecmp()

src/http/modules/ngx_http_proxy_module.c

diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 63ee8fd..cbd2ce8 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -2111,11 +2111,11 @@
 
     url = &value[1];
 
-    if (ngx_strncasecmp(url->data, "http://", 7) == 0) {
+    if (ngx_strncasecmp(url->data, (u_char *) "http://", 7) == 0) {
         add = 7;
         port = 80;
 
-    } else if (ngx_strncasecmp(url->data, "https://", 8) == 0) {
+    } else if (ngx_strncasecmp(url->data, (u_char *) "https://", 8) == 0) {
 
 #if (NGX_HTTP_SSL)