Fix memory leak with FLUFL-related syntax errors (!)
diff --git a/Parser/parsetok.c b/Parser/parsetok.c
index 7636a54..73e7e3c 100644
--- a/Parser/parsetok.c
+++ b/Parser/parsetok.c
@@ -183,11 +183,13 @@
         if (type == NOTEQUAL) {
             if (!(ps->p_flags & CO_FUTURE_BARRY_AS_BDFL) &&
                             strcmp(str, "!=")) {
+                PyObject_FREE(str);
                 err_ret->error = E_SYNTAX;
                 break;
             }
             else if ((ps->p_flags & CO_FUTURE_BARRY_AS_BDFL) &&
                             strcmp(str, "<>")) {
+                PyObject_FREE(str);
                 err_ret->text = "with Barry as BDFL, use '<>' "
                                 "instead of '!='";
                 err_ret->error = E_SYNTAX;