tweaks

Author: JelleZijlstra

Python/compile.c

@@ -1119,6 +1119,7 @@ _PyCompile_EnterConditionalBlock(struct _PyCompiler *c)
 void
 _PyCompile_LeaveConditionalBlock(struct _PyCompiler *c)
 {
+    assert(c->u->u_in_conditional_block > 0);
     c->u->u_in_conditional_block--;
 }
 
@@ -1166,6 +1167,7 @@ _PyCompile_AddDeferredAnnotation(compiler *c, stmt_ty s,
         Py_DECREF(index);
         return ERROR;
     }
+    Py_DECREF(index);
     return SUCCESS;
 }
 

Python/symtable.c

@@ -2730,7 +2730,8 @@ symtable_visit_annotation(struct symtable *st, expr_ty annotation, void *key)
 {
     if ((st->st_cur->ste_type == ClassBlock || st->st_cur->ste_type == ModuleBlock)
             && st->st_cur->ste_in_conditional_block
-            && !st->st_cur->ste_has_conditional_annotations) {
+            && !st->st_cur->ste_has_conditional_annotations)
+    {
         st->st_cur->ste_has_conditional_annotations = 1;
         if (!symtable_add_def(st, &_Py_ID(__conditional_annotations__), USE, LOCATION(annotation))) {
             return 0;