Merge remote-tracking branch 'tor-github/pr/1394' into maint-0.3.5

changes/bug31939

+  o Minor bugfixes (tls, logging):
+    - Log TLS read buffer length bugs once, rather than filling the logs
+      with similar warnings. Fixes bug 31939; bugfix on 0.3.0.4-rc.

src/lib/tls/buffers_tls.c

@@ -68,9 +68,9 @@ buf_read_from_tls(buf_t *buf, tor_tls_t *tls, size_t at_most)
 
   check_no_tls_errors();
 
-  if (BUG(buf->datalen >= INT_MAX))
+  IF_BUG_ONCE(buf->datalen >= INT_MAX)
     return -1;
-  if (BUG(buf->datalen >= INT_MAX - at_most))
+  IF_BUG_ONCE(buf->datalen >= INT_MAX - at_most)
     return -1;
 
   while (at_most > total_read) {