Patching sunwait to clear compile warnings

[linuxkidd]

Upstream PRs sunwait#24 and sunwait#29 have sat for 30+ days with no action. Patching here to clean up our compile messages.

[linuxkidd]

New make all results:

 make[1]: Entering directory '/home/runner/work/allsky/allsky/src'
2022-01-29 22:36:48 Building capture program...
2022-01-29 22:36:52 Done.
2022-01-29 22:36:52 Building capture_RPiHQ program...
2022-01-29 22:36:57 Done.
2022-01-29 22:36:57 Building startrails program...
2022-01-29 22:37:01 Done.
2022-01-29 22:37:01 Building keogram program...
2022-01-29 22:37:06 Done.
2022-01-29 22:37:06 Initializing sunwait submodule...
Submodule 'src/sunwait-src' (https://github.com/risacher/sunwait) registered for path 'sunwait-src'
Cloning into '/home/runner/work/allsky/allsky/src/sunwait-src'...
Submodule path 'sunwait-src': checked out '102cb417ecbb7a3757ba9ee4b94d6db3225124c4'
2022-01-29 22:37:1643495827 Patching sunwait compile warnings...
patching file sunriset.cpp
patching file sunwait.cpp
2022-01-29 22:37:07 Building sunwait...
make[2]: Entering directory '/home/runner/work/allsky/allsky/src/sunwait-src'
gcc -c -Wall  sunwait.cpp -o sunwait.o
gcc -c -Wall  sunriset.cpp -o sunriset.o
gcc -c -Wall  print.cpp -o print.o
gcc sunwait.o sunriset.o print.o -o sunwait -lm -lstdc++
make[2]: Leaving directory '/home/runner/work/allsky/allsky/src/sunwait-src'
2022-01-29 22:37:08 Done.
make[1]: Leaving directory '/home/runner/work/allsky/allsky/src'
make[1]: Entering directory '/home/runner/work/allsky/allsky/config_repo'
2022-01-29 22:37:08 nothing to do for all
make[1]: Leaving directory '/home/runner/work/allsky/allsky/config_repo'
make[1]: Entering directory '/home/runner/work/allsky/allsky/notification_images'
2022-01-29 22:37:08 nothing to do for all...
make[1]: Leaving directory '/home/runner/work/allsky/allsky/notification_images'
make[1]: Entering directory '/home/runner/work/allsky/allsky/scripts'
2022-01-29 22:37:08 nothing to do for all
make[1]: Leaving directory '/home/runner/work/allsky/allsky/scripts'

[AndreasLMeg]

Yes, it compiles. But I have made no source code check.

[AndreasLMeg]

I'm not sure if that doesn't make the system more complicated. But no matter, sunwait is probably no longer maintained anyway