Restore return value that got lost in rebasing

Author: alubbe

lib/ngx/re.lua

@@ -245,7 +245,10 @@ function _M.opt(option, value)
 
         local rc = C.ngx_http_lua_ffi_set_jit_stack_size(value, errbuf, sizep)
 
-        if rc ~= FFI_OK then
+        if rc == FFI_OK then
+            return
+
+        else
             return error(ffi_str(errbuf, sizep[0]))
         end
     end