Fix a couple typos

luprex/cpp/core/eng-malloc.hpp

@@ -46,10 +46,7 @@
 //   obvious way - you'll just have some of your data structures in the malloc
 //   heap instead of the eng::malloc heap.  This won't break
 //   determinism unless you iterate over a data structure like an unordered map
-//   
-
-
-but it creates a situation where we can't detect
+//   but it creates a situation where we can't detect
 //   nondeterminism.
 //
 // * Sometimes we deliberately put certain data structures into the malloc