style fix

src/http/modules/ngx_http_image_filter_module.c

diff --git a/src/http/modules/ngx_http_image_filter_module.c b/src/http/modules/ngx_http_image_filter_module.c
index 9a4dafe..b94a62d 100644
--- a/src/http/modules/ngx_http_image_filter_module.c
+++ b/src/http/modules/ngx_http_image_filter_module.c
@@ -617,7 +617,7 @@
             if (p[0] == 0xff && p[1] != 0xff) {
 
                 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
-                               "JPEG: %02xd %02xd", *p, *(p + 1));
+                               "JPEG: %02xd %02xd", p[0], p[1]);
 
                 p++;