db: Fix off-by-one error in initHookName()

Thanks to Lawrence T. Prevatte III for noticing that.

src/db/initHooks.c

@@ -123,7 +123,7 @@ const char *initHookName(int state)
         "initHookAfterInterruptAccept",
         "initHookAtEnd"
     };
-    if (state < 0 || state > NELEMENTS(stateName)) {
+    if (state < 0 || state >= NELEMENTS(stateName)) {
         return "Not an initHookState";
     }
     return stateName[state];