res_config_pgsql: Fix ast_update2_realtime calls.

Fix so multiple updates from a single call works (add missing ',').
Remove bogus ast_free's that weren't supposed to be there.
Moved a few spaces for readability.

Review: https://reviewboard.asterisk.org/r/3194/
........

Merged revisions 407873 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@407874 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_config_pgsql.c

@@ -863,7 +863,6 @@ static int update2_pgsql(const char *database, const char *tablename, va_list ap
 		if (pgresult) {
 			ast_log(LOG_ERROR, "PostgreSQL RealTime: detected invalid input: '%s'\n", newval);
 			release_table(table);
-			ast_free(sql);
 			return -1;
 		}
 		ast_str_append(&where, 0, "%s %s='%s'", first ? "" : " AND", newparam, ast_str_buffer(escapebuf));
@@ -896,11 +895,11 @@ static int update2_pgsql(const char *database, const char *tablename, va_list ap
 		if (pgresult) {
 			ast_log(LOG_ERROR, "PostgreSQL RealTime: detected invalid input: '%s'\n", newval);
 			release_table(table);
-			ast_free(sql);
 			return -1;
 		}
 
 		ast_str_append(&sql, 0, "%s %s='%s'", first ? "" : ",", newparam, ast_str_buffer(escapebuf));
+		first = 0;
 	}
 	release_table(table);