Fix setting breakpoint setting in await statements

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index 04c77edc519f1770ccc368e887f5020028213dca..4a4148aec68192858f9686dc2e1e7f9b7f91bf0d 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -22523,11 +22523,11 @@ static void PrintStackTraceFrame(Zone* zone,
   if (FLAG_precompiled_mode) {
     line = token_pos.value();
   } else {
-    if (!script.IsNull() && token_pos.IsReal()) {
+    if (!script.IsNull() && token_pos.IsSourcePosition()) {
       if (script.HasSource() || script.kind() == RawScript::kKernelTag) {
-        script.GetTokenLocation(token_pos, &line, &column);
+        script.GetTokenLocation(token_pos.SourcePosition(), &line, &column);
       } else {
-        script.GetTokenLocation(token_pos, &line, NULL);
+        script.GetTokenLocation(token_pos.SourcePosition(), &line, NULL);
       }
     }
   }