fix memory error

diff --git a/phpdbg_prompt.c b/phpdbg_prompt.c
index 47536a0678ec79b64583d9df58cc2d25b51f808f..056db99c1ccb4f5444666e2e083636ecbd0ec576 100644 (file)
--- a/phpdbg_prompt.c
+++ b/phpdbg_prompt.c
@@ -93,7 +93,7 @@ void phpdbg_init(char *init_file, size_t init_file_len, zend_bool use_default TS
                        while (fgets(cmd, PHPDBG_MAX_CMD, fp) != NULL) {
                                cmd_len = strlen(cmd)-1;
 
-                               while (*cmd && isspace(cmd[cmd_len-1]))
+                               while (cmd && isspace(cmd[cmd_len-1]))
                                        cmd_len--;
 
                                cmd[cmd_len] = '\0';