[ignition, debugger] correctly set position for return with elided bytecode.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index a99f0dae7e797f1e118d3f956683b547f684c899..a147739b7a2816cef0aa30d0a5f93e290a01eca5 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -1193,8 +1193,9 @@ size_t BytecodeArrayBuilder::GetConstantPoolEntry(Handle<Object> object) {
 void BytecodeArrayBuilder::SetReturnPosition() {
   if (return_position_ == RelocInfo::kNoPosition) return;
   if (exit_seen_in_block_) return;
-  source_position_table_builder_.AddStatementPosition(bytecodes_.size(),
-                                                      return_position_);
+  source_position_table_builder_.AddStatementPosition(
+      bytecodes_.size(), return_position_,
+      SourcePositionTableBuilder::OVERWRITE_DUPLICATE);
 }
 
 void BytecodeArrayBuilder::SetStatementPosition(Statement* stmt) {