[wasm] Enable wasm frame inspection for debugging

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 3b1c24f0dd3283102e837c9692edb3e8f6858c62..47be93aeeb3ac49e81fa87e105dc4a392daff286 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -12747,7 +12747,8 @@ bool Script::GetPositionInfo(int position, PositionInfo* info,
   if (info->line_end > 0) {
     DCHECK(script->source()->IsString());
     Handle<String> src(String::cast(script->source()));
-    if (src->Get(info->line_end - 1) == '\r') {
+    if (src->length() >= info->line_end &&
+        src->Get(info->line_end - 1) == '\r') {
       info->line_end--;
     }
   }