MFH: missing part of the fix for #38844

Author: tony2001

ext/curl/config.m4

@@ -108,6 +108,12 @@ if test "$PHP_CURL" != "no"; then
     $CURL_LIBS -L$CURL_DIR/$PHP_LIBDIR
   ])
 
+  PHP_CHECK_LIBRARY(curl,curl_multi_strerror,
+  [
+    AC_DEFINE(HAVE_CURL_MULTI_STRERROR,1,[ ])
+  ],[],[
+    $CURL_LIBS -L$CURL_DIR/$PHP_LIBDIR
+  ])
 
   if test "$PHP_CURLWRAPPERS" != "no" ; then
     AC_DEFINE(PHP_CURL_URL_WRAPPERS,1,[ ])

ext/curl/streams.c

@@ -434,7 +434,11 @@ php_stream *php_curl_stream_opener(php_stream_wrapper *wrapper, char *filename,
 		}
 
 		if (m != CURLM_OK) {
+#if HAVE_CURL_MULTI_STRERROR
 			php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", curl_multi_strerror(m));
+#else 
+			php_error_docref(NULL TSRMLS_CC, E_WARNING, "There was an error mcode=%d", m);
+#endif
 			php_stream_close(stream);
 			return NULL;
 		}