Core: fixed error handling in ngx_reopen_files().

Found by Coverity (CID 1087509).
diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c
index d1a89ae..d69783f 100644
--- a/src/core/ngx_cycle.c
+++ b/src/core/ngx_cycle.c
@@ -1104,6 +1104,8 @@
                                   ngx_close_file_n " \"%s\" failed",
                                   file[i].name.data);
                 }
+
+                continue;
             }
 
             if (fi.st_uid != user) {
@@ -1117,6 +1119,8 @@
                                       ngx_close_file_n " \"%s\" failed",
                                       file[i].name.data);
                     }
+
+                    continue;
                 }
             }
 
@@ -1133,6 +1137,8 @@
                                       ngx_close_file_n " \"%s\" failed",
                                       file[i].name.data);
                     }
+
+                    continue;
                 }
             }
         }