tracing: Have branch tracer use trace_handle_return() helper function
The branch tracer should not be checking the trace_seq_printf() return value as that will soon be void. There's a new trace_handle_return() helper function that will return TRACE_TYPE_PARTIAL_LINE if the trace_seq overflowed and TRACE_TYPE_HANDLED otherwise. Reviewed-by: NPetr Mladek <pmladek@suse.cz> Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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