ussd: Fix test for RELEASE COMPLETE

A correcsponding change in libosmocore sets text[0] to '\0'.
The test for 0xFF could never have been true.
1 file changed
tree: 81a7025b4fb673e52258ee95c28ca43a235059da
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README