Added back in NLS vector operation failure return flag (non-recoverable).  This was removed in the recent PR, but was needed to be re-inserted for the fixed-point nonlinear solver
@@ -199,6 +199,7 @@ SUNDIALS_EXPORT int SUNNonlinSolGetCurIter(SUNNonlinearSolver NLS,
#define SUN_NLS_MEM_NULL -1 /* memory argument is NULL */
#define SUN_NLS_MEM_FAIL -2 /* failed memory access / allocation */
#define SUN_NLS_ILL_INPUT -3 /* illegal function input */
+#define SUN_NLS_VECTOROP_ERR -4 /* failed NVector operation */
#ifdef __cplusplus
}
