config.c: Fix off-nominal reference leak.

This was identified and fixed by @Allan-N in #918 but it is an
important fix in its own right.

The fix here is slightly different than Allan's in that we just move
the initialization of the problematic AO2 container to where it is
first used.

Fixes #1046

diff --git a/main/config.c b/main/config.c
index e3438da6c9bb2aa32435b539dda76dff3c640958..3d7bcbe62fc4ee1f8ab79a1c390e653a2e65cd6f 100644 (file)
--- a/main/config.c
+++ b/main/config.c
@@ -2735,13 +2735,6 @@ int ast_config_text_file_save2(const char *configfile, const struct ast_config *
        struct ao2_container *fileset;
        struct inclfile *fi;
 
-       fileset = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, 1023,
-               hash_string, NULL, hashtab_compare_strings);
-       if (!fileset) {
-               /* Container creation failed. */
-               return -1;
-       }
-
        /* Check all the files for write access before attempting to modify any of them */
        for (incl = cfg->includes; incl; incl = incl->next) {
                /* reset all the output flags in case this isn't our first time saving this data */
@@ -2763,6 +2756,13 @@ int ast_config_text_file_save2(const char *configfile, const struct ast_config *
                return -1;
        }
 
+       fileset = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, 1023,
+               hash_string, NULL, hashtab_compare_strings);
+       if (!fileset) {
+               /* Container creation failed. */
+               return -1;
+       }
+
        /* Now that we know we have write access to all files, it's safe to start truncating them */
 
        /* go thru all the inclusions and make sure all the files involved (configfile plus all its inclusions)