Expect error not warning for llvm test

Author: hamishmack

overlays/patches/wasm/llvm/haskell-wasm-llvm-project.patch

@@ -340,15 +340,22 @@ index 1f824b80bcd4..1025d3ee3026 100644
        getStreamer().emitELFSize(Sym, Expr);
      }
 diff --git a/llvm/test/MC/WebAssembly/function-size-warning.s b/llvm/test/MC/WebAssembly/function-size-warning.s
-index 627002dd3578..fd410d9ae67c 100644
+index 627002dd3578..95e9294f80f7 100644
 --- a/llvm/test/MC/WebAssembly/function-size-warning.s
 +++ b/llvm/test/MC/WebAssembly/function-size-warning.s
-@@ -12,4 +12,4 @@ foo:
+@@ -1,5 +1,4 @@
+-# RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj %s -o %t.o 2>&1 | FileCheck %s
+-# RUN: llvm-objdump -t %t.o
++# RUN: not llvm-mc -triple=wasm32-unknown-unknown -filetype=obj %s -o %t.o 2>&1 | FileCheck %s
+ 
+ foo:
+   .functype foo () -> ()
+@@ -12,4 +11,4 @@ foo:
  # assembly files.
  .size foo, 0
 
 -# CHECK: warning: .size directive ignored for function symbols
-+# CHECK-ERROR: error: .size directive ignored for function symbols
++# CHECK: error: .size directive ignored for function symbols
 diff --git a/llvm/test/MC/WebAssembly/null-output.s b/llvm/test/MC/WebAssembly/null-output.s
 index fb15eecffc86..513e37d35039 100644
 --- a/llvm/test/MC/WebAssembly/null-output.s