pstore: Fix bool initialization/comparison

Bool initializations should use true and false. Bool tests don't need
comparisons.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Kees Cook <keescook@chromium.org>

fs/pstore/ftrace.c

@@ -148,7 +148,7 @@ void pstore_unregister_ftrace(void)
 	mutex_lock(&pstore_ftrace_lock);
 	if (pstore_ftrace_enabled) {
 		unregister_ftrace_function(&pstore_ftrace_ops);
-		pstore_ftrace_enabled = 0;
+		pstore_ftrace_enabled = false;
 	}
 	mutex_unlock(&pstore_ftrace_lock);