LibJS/Bytecode: Fix bogus program termination after `try` with `catch`

For `try` statements with a `catch` clause, we were generating *two*
"next" blocks. This meant that not throwing an exception would cause
execution to stop.

Fix this by using the "next" block pointer for the try "entry" and
"handler" blocks.

1 files changed, 3 insertions, 3 deletions

diff --git a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
index 376705fb3e..734c345600 100644
--- a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
@@ -2254,10 +2254,10 @@ Bytecode::CodeGenerationErrorOr<void> TryStatement::generate_bytecode(Bytecode::
         if (m_finalizer) {
             generator.emit<Bytecode::Op::Jump>(finalizer_target);
         } else {
-            auto& block = generator.make_block();
+            if (!next_block)
+                next_block = &generator.make_block();
             generator.emit<Bytecode::Op::LeaveUnwindContext>();
-            generator.emit<Bytecode::Op::Jump>(Bytecode::Label { block });
-            next_block = &block;
+            generator.emit<Bytecode::Op::Jump>(Bytecode::Label { *next_block });
         }
     }