ci: enable compilation with "-Werror" #4759
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The `git_odb_stream` members `declared_size` and `received_bytes` are both of the type `git_off_t`, which we usually defined to be a 64 bit signed integer. Thus, passing these members to "PRIdZ" formatters is not correct, as they are not guaranteed to accept big enough numbers. Instead, use the "PRId64" formatter, which is able to represent 64 bit signed integers.
During the conversion of our CI scripts in bf418f0 (ci: refactor unix ci build/test scripts, 2018-07-14), we accidentally dropped the "-DENABLE_WERROR=ON" switch in our cmake invocation. Re-add it to help us catch compiler warnings early.
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During the conversion of our CI scripts in bf418f0 (ci: refactor unix
ci build/test scripts, 2018-07-14), we accidentally dropped the
"-DENABLE_WERROR=ON" switch in our cmake invocation. Re-add it to help
us catch compiler warnings early.