pg.h in pg-0.12.1

- old
+ new

@@ -12,9 +12,10 @@
 #ifdef HAVE_UNISTD_H
 #	include <unistd.h>
 #endif /* HAVE_UNISTD_H */
 
 #include "ruby.h"
+#include "ruby/st.h"
 #include "libpq-fe.h"
 #include "libpq/libpq-fs.h"              /* large-object interface */
 #include "compat.h"
 
 #if RUBY_VM != 1