liblog: add __android_log_close()

am: b1b5d507

Change-Id: I5d6a6e97960e88e6f668b6376ec296d7452ec1dc

liblog/logd_write.c

@@ -355,6 +355,9 @@ void __android_log_close()
 #else
     close(logd_fd);
     logd_fd = -1;
+
+    close(pstore_fd);
+    pstore_fd = -1;
 #endif
 
 #ifdef HAVE_PTHREADS