Fix logspam when battery sysfs file not available.

This was a regression caused by a recent change to use String8
instead of char*.  We missed the implicit null check here.

Bug: 9377604
Change-Id: I7eff138096622c47b5d45678010373dc82138384

parent 76b76666

services/jni/com_android_server_BatteryService.cpp

+1 −1

Original line number	Diff line number	Diff line
		@@ -144,7 +144,7 @@ static jint getBatteryHealth(const char* status)

		static int readFromFile(const String8& path, char* buf, size_t size)
		{
		if (!path)
		if (path.isEmpty())
		return -1;
		int fd = open(path.string(), O_RDONLY, 0);
		if (fd == -1) {