In c5668d99, a new source file row_cache.cc was added to the `db` target,
but with an extraneous trailing comma. In CMake's target_sources(),
source files should be space-separated - any comma is interpreted as
part of the filename, causing build failures like:
```
CMake Error at db/CMakeLists.txt:2 (target_sources):
Cannot find source file:
row_cache.cc,
```
Fix the issue by removing the trailing comma.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#22754
0185aa458b