Add F() macro on WaterDispenser example

Reduction of 44 bytes of dynamic memory
Before macro usage: 1234 bytes (60%) of dynamic memory
After macro usage: 1190 bytes (58%) of dynamic memory
1 file changed
tree: 0e95d041030cae3e9cc3b191b32299a10c5f0e44
  1. examples/
  2. src/
  3. .gitignore
  4. AUTHORS
  5. COPYING
  6. Makefile
  7. README