khash: add eol so picky compilers stop warning
diff --git a/src/khash.h b/src/khash.h
index 818ac83..71eb583 100644
--- a/src/khash.h
+++ b/src/khash.h
@@ -619,4 +619,4 @@ typedef const char *kh_cstr_t;
#define KHASH_MAP_INIT_STR(name, khval_t) \
KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
-#endif /* __AC_KHASH_H */
\ No newline at end of file
+#endif /* __AC_KHASH_H */