core: fix memory leak in evaluation of sub-conditions

ChangeLog

@@ -13,6 +13,7 @@ http://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 
 == Version 0.4.4 (under dev)
 
+* core: fix memory leak in evaluation of sub-conditions
 * core: fix memory leak in function gui_key_add_to_infolist (in case of
   insufficient memory)
 * core: fix use of invalid pointer in function gui_bar_window_content_alloc

src/core/wee-eval.c

@@ -603,7 +603,11 @@ eval_expression_condition (const char *expr, struct t_hashtable *pointers,
                 + 1;
             tmp_value2 = malloc (length);
             if (!tmp_value2)
+            {
+                if (tmp_value)
+                    free (tmp_value);
                 goto end;
+            }
             tmp_value2[0] = '\0';
             if (pos > expr2)
             {
@@ -619,6 +623,8 @@ eval_expression_condition (const char *expr, struct t_hashtable *pointers,
             }
             free (expr2);
             expr2 = tmp_value2;
+            if (tmp_value)
+                free (tmp_value);
         }
     }