Lennart Poettering
db4229d12f
The 'r' variable is our "go-to" variable for error return codes, all across our codebase. In unit_attach_pids_to_cgroup() it was so far used in a strange way for most of the function: instead of directly storing the error codes of functions we call we'd store it in a local variable 'q' instead, and propagate it to 'r' only in some cases finally we'd return the ultimate result of 'r'. Let's normalize this a bit: let's always store error return values in 'r', and then use 'ret' as the variable to sometimes propagate errors to, and then return that. This also allows us to get rid of one local variable. No actual codeflow changes, just some renaming of variables that allows us to remove one.
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