write_http plugin: Don't compare pointer with numeric literal.

Not even zero. Not even once.

References: #722

diff --git a/src/write_http.c b/src/write_http.c
index 198fb48..7a1fbd0 100644 (file)
--- a/src/write_http.c
+++ b/src/write_http.c
@@ -590,7 +590,7 @@ static int wh_config_url (oconfig_item_t *ci) /* {{{ */
 
         /* Allocate the buffer. */
         cb->send_buffer = malloc (cb->send_buffer_size);
-        if (cb->send_buffer == 0)
+        if (cb->send_buffer == NULL)
         {
                 ERROR ("write_http plugin: malloc(%zu) failed.", cb->send_buffer_size);
                 wh_callback_free (cb);