Merge "Fix bogus error checking on unique_fd"

am: a0fe1227b8

Change-Id: I90f7429cf22cd2a400054a9b3eed4fc4d79436a6

applypatch/applypatch.cpp

@@ -76,7 +76,7 @@ static bool ReadPartitionToBuffer(const Partition& partition, FileContents* out,
   }
 
   android::base::unique_fd dev(open(partition.name.c_str(), O_RDONLY));
-  if (!dev) {
+  if (dev == -1) {
     PLOG(ERROR) << "Failed to open eMMC partition \"" << partition << "\"";
   } else {
     std::vector<unsigned char> buffer(partition.size);

fuse_sideload/fuse_sideload.cpp

@@ -392,7 +392,7 @@ int run_fuse_sideload(std::unique_ptr<FuseDataProvider>&& provider, const char*
   }
 
   fd.ffd.reset(open("/dev/fuse", O_RDWR));
-  if (!fd.ffd) {
+  if (fd.ffd == -1) {
     perror("open /dev/fuse");
     result = -1;
     goto done;