Fix test case headers for new types.hpp

test/checksum.cpp

@@ -2,6 +2,7 @@
 #include "adler.hpp"
 #include "bsdsum.hpp"
 #include "types.hpp"
+#include "debug.hpp"
 
 #include <cstdlib>
 #include <cstring>

test/region.cpp

@@ -1,4 +1,5 @@
 #include "../region.hpp"
+#include "../debug.hpp"
 
 using util::region;