[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 a5da88a0b3b2e0b5e44b17e0918d17655ea38e09..f26bb1e4100973808b534f48695cbcb092c3333c 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -12767,7 +12767,8 @@ 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--;
     }
   }