Placate coverity by checking for a null pointer (CID #1504605) (#4644)

diff --git a/src/lib/unlang/xlat_expr.c b/src/lib/unlang/xlat_expr.c
index cd33e373d4fef2e5b787e5d9297e6f26e7597088..6e87ed0952fe5b1167adf4880afd08f3091c0d33 100644 (file)
--- a/src/lib/unlang/xlat_expr.c
+++ b/src/lib/unlang/xlat_expr.c
@@ -401,7 +401,7 @@ static xlat_action_t xlat_binary_op(TALLOC_CTX *ctx, fr_dcursor_t *out,
                RPEDEBUG("Failed calculating result, returning NULL");
                goto done;
        }
-       
+
        /*
         *      Over-write, but only if it's present.  Otherwise leave
         *      any existing enum alone.
@@ -550,6 +550,7 @@ static int xlat_instantiate_regex(xlat_inst_ctx_t const *xctx)
 
        (void) fr_dlist_remove(&xctx->ex->call.args->dlist, rhs);
 
+       fr_assert(rhs);
        fr_assert(rhs->type == XLAT_GROUP);
        regex = xlat_exp_head(rhs->group);
        fr_assert(tmpl_contains_regex(regex->vpt));
@@ -714,7 +715,7 @@ static xlat_action_t xlat_regex_match(TALLOC_CTX *ctx, request_t *request, fr_va
                talloc_free(vb);
        }
 
-done:  
+done:
        talloc_free(regmatch);  /* free if not consumed */
 
        MEM(dst = fr_value_box_alloc(ctx, FR_TYPE_BOOL, attr_expr_bool_enum, false));