Protect err codes

diff --git a/libraries/libmdb/mdb.h b/libraries/libmdb/mdb.h
index 39d9b6fb3aa60047a2015985b244d2732f327d5b..30d4e927ea0760cc65858650596fefc25b758e6d 100644 (file)
--- a/libraries/libmdb/mdb.h
+++ b/libraries/libmdb/mdb.h
@@ -84,12 +84,12 @@ typedef enum MDB_cursor_op {                /* cursor operations */
 /* return codes */
 /* BerkeleyDB uses -30800 to -30999, we'll go under them */
 #define MDB_SUCCESS     0
-#define MDB_KEYEXIST   -30799          /* key/data pair already exists */
-#define MDB_NOTFOUND   -30798          /* key/data pair not found (EOF) */
-#define MDB_PAGE_NOTFOUND      -30797  /* Requested page not found */
-#define MDB_CORRUPTED  -30796          /* Located page was wrong type */
-#define MDB_PANIC              -30795          /* Update of meta page failed, probably I/O error */
-#define MDB_VERSION_MISMATCH   -30794  /* Environment version mismatch */
+#define MDB_KEYEXIST   (-30799)                /* key/data pair already exists */
+#define MDB_NOTFOUND   (-30798)                /* key/data pair not found (EOF) */
+#define MDB_PAGE_NOTFOUND      (-30797)        /* Requested page not found */
+#define MDB_CORRUPTED  (-30796)                /* Located page was wrong type */
+#define MDB_PANIC              (-30795)                /* Update of meta page failed, probably I/O error */
+#define MDB_VERSION_MISMATCH   (-30794)        /* Environment version mismatch */
 
 /* DB flags */
 #define MDB_REVERSEKEY 0x02            /* use reverse string keys */