[wasm] Add missing early exit from compilation (BackgroundCompileTask)

This CL adds back a check that previously had an early exit within
the compilation loop, when compilation failed.

Change-Id: Ie511010af22029671c8eb71aa2189d6429081b14
Reviewed-on: https://chromium-review.googlesource.com/968504Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Kim-Anh Tran <kimanh@google.com>
Cr-Commit-Position: refs/heads/master@{#52026}

src/wasm/module-compiler.cc

@@ -1521,6 +1521,7 @@ class BackgroundCompileTask : public CancelableTask {
   void RunInternal() override {
     TRACE_COMPILE("(3b) Compiling...\n");
     while (compilation_state_->CanAcceptWork()) {
+      if (compilation_state_->failed()) break;
       DisallowHandleAllocation no_handle;
       DisallowHeapAllocation no_allocation;