From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Tue, 7 Feb 2017 15:33:27 +0000 (+0000)
Subject: [Minor] Add guards when free an expresssion
X-Git-Tag: 1.5.0~159
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=3e7227fb5bc04ba4b03b65eb27d1b892cc271ca8;p=rspamd.git

[Minor] Add guards when free an expresssion
---

diff --git a/src/libutil/expression.c b/src/libutil/expression.c
index a7cc1af80..6ee6ccb67 100644
--- a/src/libutil/expression.c
+++ b/src/libutil/expression.c
@@ -354,9 +354,16 @@ rspamd_expression_destroy (struct rspamd_expression *expr)
 			}
 		}
 
-		g_array_free (expr->expressions, TRUE);
-		g_ptr_array_free (expr->expression_stack, TRUE);
-		g_node_destroy (expr->ast);
+		if (expr->expressions) {
+			g_array_free (expr->expressions, TRUE);
+		}
+		if (expr->expression_stack) {
+			g_ptr_array_free (expr->expression_stack, TRUE);
+		}
+		if (expr->ast) {
+			g_node_destroy (expr->ast);
+		}
+
 		g_slice_free1 (sizeof (*expr), expr);
 	}
 }