Fix a bug in StorageManager.

Test: Ran statsd and statsd_test.

Change-Id: I2390c6d2c493981177b08d3861d7bee621253af3

cmds/statsd/src/storage/StorageManager.cpp

@@ -40,7 +40,7 @@ using std::unique_ptr;
 
 void StorageManager::writeFile(const char* file, const void* buffer, int numBytes) {
     int fd = open(file, O_WRONLY | O_CREAT | O_CLOEXEC, S_IRUSR | S_IWUSR);
-    if (fd != -1) {
+    if (fd == -1) {
         VLOG("Attempt to access %s but failed", file);
         return;
     }