Fix memory leaks

(closes issue ASTERISK-22368)
Reported by: Corey Farrell
Patches:
     issueA22368_mixmonitor_free_filename.patch uploaded by wdoekes (license 5674)
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Merged revisions 398004 from http://svn.asterisk.org/svn/asterisk/branches/10
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Merged revisions 398011 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 398016 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@398017 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_mixmonitor.c

@@ -496,12 +496,14 @@ static void mixmonitor_free(struct mixmonitor *mixmonitor)
 		if (mixmonitor->mixmonitor_ds) {
 			ast_mutex_destroy(&mixmonitor->mixmonitor_ds->lock);
 			ast_cond_destroy(&mixmonitor->mixmonitor_ds->destruction_condition);
-			ast_free(mixmonitor->filename_write);
-			ast_free(mixmonitor->filename_read);
 			ast_free(mixmonitor->mixmonitor_ds);
+		}
+
 		ast_free(mixmonitor->name);
 		ast_free(mixmonitor->post_process);
-		}
+		ast_free(mixmonitor->filename);
+		ast_free(mixmonitor->filename_write);
+		ast_free(mixmonitor->filename_read);
 
 		/* Free everything in the recipient list */
 		clear_mixmonitor_recipient_list(mixmonitor);