ntml_wb: fix buffer type typo
https://github.com/curl/curl/commit/e75a48d2c32d92b0321fbb09c25885a706077201

Index: lib/curl_ntlm_wb.c
--- lib/curl_ntlm_wb.c.orig
+++ lib/curl_ntlm_wb.c
@@ -266,7 +266,7 @@ static CURLcode ntlm_wb_response(struct Curl_easy *dat
   size_t len_in = strlen(input), len_out = 0;
   struct dynbuf b;
   char *ptr = NULL;
-  usigned char buf[1024]
+  unsigned char buf[1024];
   Curl_dyn_init(&b, MAX_NTLM_WB_RESPONSE);
 
   while(len_in > 0) {