[lldb] Fix incorrect uses of LLDB_LOG_ERROR

Fix incorrect uses of LLDB_LOG_ERROR. The macro doesn't automatically
inject the error in the log message: it merely passes the error as the
first argument to formatv and therefore must be referenced with {0}.

Thanks to Nicholas Allegra for collecting a list of places where the
macro was misused.

rdar://111581655

Differential revision: https://reviews.llvm.org/D154530