optimization

diff --git a/src/http/modules/ngx_http_flv_module.c b/src/http/modules/ngx_http_flv_module.c
index 1e8f96f..0e19091 100644
--- a/src/http/modules/ngx_http_flv_module.c
+++ b/src/http/modules/ngx_http_flv_module.c

@@ -111,10 +111,9 @@
     of.errors = clcf->open_file_cache_errors;
     of.events = clcf->open_file_cache_events;
 
-    rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
-
-    if (rc == NGX_ERROR) {
-
+    if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+        != NGX_OK)
+    {
         switch (of.err) {
 
         case 0:

diff --git a/src/http/modules/ngx_http_gzip_static_module.c b/src/http/modules/ngx_http_gzip_static_module.c
index e4aaeb3..6018203 100644
--- a/src/http/modules/ngx_http_gzip_static_module.c
+++ b/src/http/modules/ngx_http_gzip_static_module.c

@@ -125,10 +125,9 @@
     of.errors = clcf->open_file_cache_errors;
     of.events = clcf->open_file_cache_events;
 
-    rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
-
-    if (rc == NGX_ERROR) {
-
+    if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+        != NGX_OK)
+    {
         switch (of.err) {
 
         case 0:
@@ -143,20 +142,18 @@
         case NGX_EACCES:
 
             level = NGX_LOG_ERR;
-            rc = NGX_DECLINED;
             break;
 
         default:
 
             level = NGX_LOG_CRIT;
-            rc = NGX_DECLINED;
             break;
         }
 
         ngx_log_error(level, log, of.err,
                       ngx_open_file_n " \"%s\" failed", path.data);
 
-        return rc;
+        return NGX_DECLINED;
     }
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);

diff --git a/src/http/modules/ngx_http_index_module.c b/src/http/modules/ngx_http_index_module.c
index c962283..6bfb045 100644
--- a/src/http/modules/ngx_http_index_module.c
+++ b/src/http/modules/ngx_http_index_module.c

@@ -214,10 +214,9 @@
         of.errors = clcf->open_file_cache_errors;
         of.events = clcf->open_file_cache_events;
 
-        rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
-
-        if (rc == NGX_ERROR) {
-
+        if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+            != NGX_OK)
+        {
             ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, of.err,
                            ngx_open_file_n " \"%s\" failed", path.data);
 

diff --git a/src/http/modules/ngx_http_static_module.c b/src/http/modules/ngx_http_static_module.c
index cfc7089..c4e688f 100644
--- a/src/http/modules/ngx_http_static_module.c
+++ b/src/http/modules/ngx_http_static_module.c

@@ -102,10 +102,9 @@
     of.errors = clcf->open_file_cache_errors;
     of.events = clcf->open_file_cache_events;
 
-    rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
-
-    if (rc == NGX_ERROR) {
-
+    if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+        != NGX_OK)
+    {
         switch (of.err) {
 
         case 0:

diff --git a/src/http/modules/perl/nginx.xs b/src/http/modules/perl/nginx.xs
index 78455b9..c665446 100644
--- a/src/http/modules/perl/nginx.xs
+++ b/src/http/modules/perl/nginx.xs

@@ -613,7 +613,6 @@
     char                      *filename;
     int                        offset;
     size_t                     bytes;
-    ngx_int_t                  rc;
     ngx_str_t                  path;
     ngx_buf_t                 *b;
     ngx_open_file_info_t       of;
@@ -657,10 +656,9 @@
 
     (void) ngx_cpystrn(path.data, filename, path.len + 1);
 
-    rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool);
-
-    if (rc == NGX_ERROR) {
-
+    if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+        != NGX_OK)
+    {
         if (of.err == 0) {
             XSRETURN_EMPTY;
         }

diff --git a/src/http/ngx_http_script.c b/src/http/ngx_http_script.c
index e30fda2..0af34e3 100644
--- a/src/http/ngx_http_script.c
+++ b/src/http/ngx_http_script.c

@@ -982,7 +982,7 @@
     of.events = clcf->open_file_cache_events;
 
     if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
-        == NGX_ERROR)
+        != NGX_OK)
     {
         if (of.err != NGX_ENOENT && of.err != NGX_ENOTDIR) {
             ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,