regex_timer.cpp:

  - Head off some infinite looping on some platforms


[SVN r12550]

libs/regex

@@ -1 +1 @@
-Subproject commit c07c4e0a116d92452287b414ecf83fcf01178eec
+Subproject commit 6463dcfb0779263d82b5f9cef7b957dd426cf2bd