Added more error checking for no-eh builds.

[SVN r12870]

include/boost/regex/detail/regex_compile.hpp

@@ -1172,6 +1172,7 @@ void BOOST_REGEX_CALL reg_expression<charT, traits, Allocator>::fixup_apply(re_d
    {
 #endif
       pb = a.allocate(cbraces);
+      BOOST_REGEX_NOEH_ASSERT(pb)
       for(unsigned i = 0; i < cbraces; ++i)
          pb[i] = false;