Allow plain `try` with no `catch` or `delegate` (#1676)

Matches recent changes in the exception handling spec that allowed
this case to reduce special cases in the syntax:

  https://github.com/WebAssembly/exception-handling/pull/157

3 files changed, 16 insertions, 14 deletions

diff --git a/test/parse/expr/bad-try-clause.txt b/test/parse/expr/bad-try-clause.txt
new file mode 100644
index 00000000..f8575c8c
--- /dev/null
+++ b/test/parse/expr/bad-try-clause.txt
@@ -0,0 +1,10 @@
+;;; TOOL: wat2wasm
+;;; ARGS: --enable-exceptions
+;;; ERROR: 1
+(module
+  (func (try (do) (foo)))
+(;; STDERR ;;;
+out/test/parse/expr/bad-try-clause.txt:5:20: error: unexpected token "foo", expected catch, catch_all or delegate.
+  (func (try (do) (foo)))
+                   ^^^
+;;; STDERR ;;)
diff --git a/test/parse/expr/bad-try-no-catch.txt b/test/parse/expr/bad-try-no-catch.txt
deleted file mode 100644
index c85756fb..00000000
--- a/test/parse/expr/bad-try-no-catch.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-;;; TOOL: wat2wasm
-;;; ARGS: --enable-exceptions
-;;; ERROR: 1
-(module
-  (func try nop end)
-  (func (try (do nop))))
-(;; STDERR ;;;
-out/test/parse/expr/bad-try-no-catch.txt:5:17: error: unexpected token "end", expected catch, catch_all or delegate.
-  (func try nop end)
-                ^^^
-out/test/parse/expr/bad-try-no-catch.txt:6:22: error: unexpected token ), expected (.
-  (func (try (do nop))))
-                     ^
-;;; STDERR ;;)
diff --git a/test/parse/expr/try.txt b/test/parse/expr/try.txt
index c10eebc2..51ed83b5 100644
--- a/test/parse/expr/try.txt
+++ b/test/parse/expr/try.txt
@@ -3,6 +3,12 @@
 (module
   (tag (param i32))
 
+  ;; no catch
+  (func
+    try
+      nop
+    end)
+
   ;; bare
   (func
     try