check emalloc() result

diff --git a/ext/standard/http_fopen_wrapper.c b/ext/standard/http_fopen_wrapper.c
index 45fa637c0de40ca47929109d7598e0ff4a65752b..d7b62e186d0cca995892a60e5baa285ed5501548 100644 (file)
--- a/ext/standard/http_fopen_wrapper.c
+++ b/ext/standard/http_fopen_wrapper.c
@@ -587,6 +587,9 @@ finish:
                /* ensure the header is only sent if user_agent is not blank */
                if (ua_len > sizeof(_UA_HEADER)) {
                        ua = emalloc(ua_len + 1);
+                       if (NULL == ua) {
+                               return NULL;
+                       }
                        if ((ua_len = slprintf(ua, ua_len, _UA_HEADER, ua_str)) > 0) {
                                ua[ua_len] = 0;
                                php_stream_write(stream, ua, ua_len);