[libFuzzer] Don't short-circuit from CrashCallback.

Short-circuiting causes tests to fail on Mac since libFuzzer crashes
rather than exiting with an error code when an unexpected signal
happens.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@331324 91177308-0d34-0410-b5e6-96231b3b80d8

Author: morehouse

lib/fuzzer/FuzzerLoop.cpp

@@ -228,9 +228,8 @@ void Fuzzer::StaticFileSizeExceedCallback() {
 }
 
 void Fuzzer::CrashCallback() {
-  if (EF->__sanitizer_acquire_crash_state &&
-      !EF->__sanitizer_acquire_crash_state())
-    return;
+  if (EF->__sanitizer_acquire_crash_state)
+    EF->__sanitizer_acquire_crash_state();
   Printf("==%lu== ERROR: libFuzzer: deadly signal\n", GetPid());
   if (EF->__sanitizer_print_stack_trace)
     EF->__sanitizer_print_stack_trace();