Fixed wrong sizeof() in ngx_http_init_locations().

There is no real difference on all known platforms, but it's still wrong.

Found by Coverity (CID 400876).
diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index ce5adb7..31577f9 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -742,7 +742,7 @@
 
     if (named) {
         clcfp = ngx_palloc(cf->pool,
-                           (n + 1) * sizeof(ngx_http_core_loc_conf_t **));
+                           (n + 1) * sizeof(ngx_http_core_loc_conf_t *));
         if (clcfp == NULL) {
             return NGX_ERROR;
         }
@@ -768,7 +768,7 @@
     if (regex) {
 
         clcfp = ngx_palloc(cf->pool,
-                           (r + 1) * sizeof(ngx_http_core_loc_conf_t **));
+                           (r + 1) * sizeof(ngx_http_core_loc_conf_t *));
         if (clcfp == NULL) {
             return NGX_ERROR;
         }