installer for new block OTA system

(Cherry-pick back from master.)

Bug: 16984795
Change-Id: Ifa3d8345c5e2a0be86fb28faa080ca82592a96b4

applypatch/bspatch.c

@@ -112,9 +112,7 @@ int ApplyBSDiffPatch(const unsigned char* old_data, ssize_t old_size,
         printf("short write of output: %d (%s)\n", errno, strerror(errno));
         return 1;
     }
-    if (ctx) {
-        SHA_update(ctx, new_data, new_size);
-    }
+    if (ctx) SHA_update(ctx, new_data, new_size);
     free(new_data);
 
     return 0;