style fix: remove trailing spaces

diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index 0385c96..93b713d 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c

@@ -1354,15 +1354,15 @@
 
             case '<':
                 len += sizeof("&lt;") - 2;
-                break; 
+                break;
 
             case '>':
                 len += sizeof("&gt;") - 2;
-                break; 
+                break;
 
             case '&':
                 len += sizeof("&amp;") - 2;
-                break; 
+                break;
 
             default:
                 break;

diff --git a/src/http/modules/ngx_http_flv_module.c b/src/http/modules/ngx_http_flv_module.c
index 3de4ebf..b26ab69 100644
--- a/src/http/modules/ngx_http_flv_module.c
+++ b/src/http/modules/ngx_http_flv_module.c

@@ -110,7 +110,7 @@
     of.retest = clcf->open_file_cache_retest;
     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) {

diff --git a/src/http/modules/perl/nginx.xs b/src/http/modules/perl/nginx.xs
index 24379ad..a8c6cdc 100644
--- a/src/http/modules/perl/nginx.xs
+++ b/src/http/modules/perl/nginx.xs

@@ -637,11 +637,11 @@
     }
 
     clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
-    
+
     of.test_dir = 0;
-    of.retest = clcf->open_file_cache_retest; 
-    of.errors = clcf->open_file_cache_errors; 
-    of.events = clcf->open_file_cache_events; 
+    of.retest = clcf->open_file_cache_retest;
+    of.errors = clcf->open_file_cache_errors;
+    of.events = clcf->open_file_cache_events;
 
     path.len = ngx_strlen(filename);
 
@@ -651,7 +651,7 @@
     }
 
     (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) {