Bug 914174 - Fix nit in previous ASan patch. r=luke

js/src/jit/AsmJSSignalHandlers.cpp

@@ -1034,8 +1034,7 @@ js::TriggerOperationCallbackForAsmJSCode(JSRuntime *rt)
 #endif
 }
 
-#ifdef MOZ_ASAN
-#ifdef JS_STANDALONE
+#if defined(MOZ_ASAN) && defined(JS_STANDALONE)
 // Usually, this definition is found in mozglue (see mozglue/build/AsanOptions.cpp).
 // However, when doing standalone JS builds, mozglue is not used and we must ensure
 // that we still allow custom SIGSEGV handlers for asm.js and ion to work correctly.
@@ -1044,4 +1043,3 @@ const char* __asan_default_options() {
     return "allow_user_segv_handler=1";
 }
 #endif
-#endif