Regex: Do not use sized deallocation to support more compilers

src/regex_impl.hh

@@ -118,7 +118,7 @@ public:
             for (size_t i = m_program.save_count-1; i > 0; --i)
                 saves->pos[i].~Iterator();
             saves->~Saves();
-            ::operator delete(saves, sizeof(Saves) + (m_program.save_count-1) * sizeof(Iterator));
+            ::operator delete(saves);
         }
     }