compiler: Don't crash when dumping ast of empty block.
Fixes golang/go#10420. From-SVN: r224487
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@ -65,6 +65,12 @@ class Ast_dump_traverse_statements : public Traverse
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int Ast_dump_traverse_blocks_and_functions::block(Block * block)
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{
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if (block == NULL)
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{
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this->ast_dump_context_->ostream() << std::endl;
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return TRAVERSE_EXIT;
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}
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this->ast_dump_context_->print_indent();
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this->ast_dump_context_->ostream() << "{" << std::endl;
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this->ast_dump_context_->indent();
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@ -466,4 +472,4 @@ Ast_dump_context::dump_to_stream(const Expression* expr, std::ostream* out)
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{
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Ast_dump_context adc(out, false);
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expr->dump_expression(&adc);
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}
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}
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